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Every official 2018 MLB transaction involving the Kansas City Royals on either side of the move: 151 trades, signings and releases dated and grouped by month, with MLB’s own description of each move. Both directions are covered: 138 moves land with the Royals and 13 depart from them.
Showing 151 of 151 Kansas City Royals transactions
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 22, 2018 | Signed as free agent | Luis Hernandez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luis Hernandez to a minor league contract. |
| Dec 19, 2018 | Signed as free agent | Juan Polo | — | Kansas City Royals | Kansas City Royals signed free agent RHP Juan Polo to a minor league contract. |
| Dec 18, 2018 | Signed as free agent | Terrance Gore | — | Kansas City Royals | Kansas City Royals signed free agent LF Terrance Gore. |
| Dec 17, 2018 | Signed as free agent | Bubba Starling | — | Kansas City Royals | Kansas City Royals signed free agent OF Bubba Starling to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Samir Dueñez | — | Kansas City Royals | Kansas City Royals signed free agent 1B Samir Duenez to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Jason Adam | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jason Adam to a minor league contract and invited him to spring training. |
| Dec 13, 2018 | Trade | Chris Ellis | Texas Rangers | Kansas City Royals | Texas Rangers traded RHP Chris Ellis to Kansas City Royals for cash. |
| Dec 11, 2018 | Signed as free agent | Billy Hamilton | — | Kansas City Royals | Kansas City Royals signed free agent CF Billy Hamilton. |
| Dec 10, 2018 | Signed as free agent | Johnfi Liquet | — | Kansas City Royals | Kansas City Royals signed free agent LHP Johnfi Liquet to a minor league contract. |
| Dec 10, 2018 | Signed as free agent | Jeffry Reynoso | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jeffry Reynoso to a minor league contract. |
| Dec 5, 2018 | Signed as free agent | Chris Owings | — | Kansas City Royals | Kansas City Royals signed free agent 2B Chris Owings. |
| Dec 4, 2018 | Signed as free agent | Andrés Machado | — | Kansas City Royals | Kansas City Royals signed free agent RHP Andres Machado to a minor league contract and invited him to spring training. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Nov 13, 2018 | Signed as free agent | Michael Ynoa | — | Kansas City Royals | Kansas City Royals signed free agent RHP Michael Ynoa to a minor league contract and invited him to spring training. |
| Nov 12, 2018 | Signed as free agent | Osiris Santana | — | Kansas City Royals | Kansas City Royals signed free agent RHP Osiris Santana to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Oct 19, 2018 | Signed as free agent | Adrian Gonzalez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Adrian Gonzalez to a minor league contract. |
| Oct 19, 2018 | Signed as free agent | Junior Calderon | — | Kansas City Royals | Kansas City Royals signed free agent 3B Junior Calderon to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Sep 10, 2018 | Released | Eric Stout | — | Kansas City Royals | Kansas City Royals released LHP Eric Stout. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Aug 31, 2018 | Trade | Drew Butera | Kansas City Royals | Colorado Rockies | Kansas City Royals traded C Drew Butera and cash to Colorado Rockies for LHP Jerry Vasto. |
| Aug 29, 2018 | Trade | Lucas Duda | Kansas City Royals | Atlanta Braves | Kansas City Royals traded 1B Lucas Duda to Atlanta Braves for cash. |
| Aug 26, 2018 | Signed as free agent | Darryl Collins | — | Kansas City Royals | Kansas City Royals signed free agent OF Darryl Collins to a minor league contract. |
| Aug 24, 2018 | Signed as free agent | Woo Young Jin | — | Kansas City Royals | Kansas City Royals signed free agent RHP Woo-Young Jin to a minor league contract. |
| Aug 17, 2018 | Signed as free agent | Omar Hernandez | — | Kansas City Royals | Kansas City Royals signed free agent C Omar Hernandez to a minor league contract. |
| Aug 16, 2018 | Trade | Kelvin Gonzalez | Kansas City Royals | Texas Rangers | Kansas City Royals traded RHP Kelvin Gonzalez to Texas Rangers for Future Considerations. |
| Aug 15, 2018 | Trade | Terrance Gore | Kansas City Royals | Chicago Cubs | Kansas City Royals traded LF Terrance Gore to Chicago Cubs for cash. |
| Aug 15, 2018 | Released | Blaine Boyer | — | Kansas City Royals | Kansas City Royals released RHP Blaine Boyer. |
| Aug 7, 2018 | Trade | Jon Perrin | Milwaukee Brewers | Kansas City Royals | Milwaukee Brewers traded RHP Jon Perrin to Kansas City Royals for RHP Sal Biasi. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jul 27, 2018 | Trade | Jorge López | Milwaukee Brewers | Kansas City Royals | Kansas City Royals traded 3B Mike Moustakas to Milwaukee Brewers for CF Brett Phillips and RHP Jorge Lopez. |
| Jul 25, 2018 | Signed as free agent | Rothaikeg Seijas | — | Kansas City Royals | Kansas City Royals signed free agent RF Rothaikeg Seijas to a minor league contract. |
| Jul 23, 2018 | Signed as free agent | Luis Lugo | — | Kansas City Royals | Kansas City Royals signed free agent LHP Luis Lugo to a minor league contract. |
| Jul 22, 2018 | Trade | Brian Goodwin | Washington Nationals | Kansas City Royals | Washington Nationals traded LF Brian Goodwin to Kansas City Royals for RHP Jacob Condra-Bogan. |
| Jul 18, 2018 | Released | Abraham Almonte | — | Kansas City Royals | Kansas City Royals released CF Abraham Almonte. |
| Jul 10, 2018 | Signed as free agent | Pablo Mujica | — | Kansas City Royals | Kansas City Royals signed free agent LHP Pablo Mujica to a minor league contract. |
| Jul 10, 2018 | Signed as free agent | Dionmy Salon | — | Kansas City Royals | Kansas City Royals signed free agent C Dionmy Salon to a minor league contract. |
| Jul 8, 2018 | Signed as free agent | Kaito Yuki | — | Kansas City Royals | Kansas City Royals signed free agent RHP Kaito Yuki to a minor league contract. |
| Jul 8, 2018 | Signed as free agent | Dallas Beeler | — | Kansas City Royals | Kansas City Royals signed free agent RHP Dallas Beeler to a minor league contract. |
| Jul 8, 2018 | Signed as free agent | Dario Peralta | — | Kansas City Royals | Kansas City Royals signed free agent RHP Dario Peralta to a minor league contract. |
| Jul 7, 2018 | Released | Justin Grimm | — | Kansas City Royals | Kansas City Royals released RHP Justin Grimm. |
| Jul 6, 2018 | Signed as free agent | Juan Martinez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Juan Martinez to a minor league contract. |
| Jul 6, 2018 | Signed as free agent | Samuel Valerio | — | Kansas City Royals | Kansas City Royals signed free agent RHP Samuel Valerio to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Christian Paulino | — | Kansas City Royals | Kansas City Royals signed free agent LHP Christian Paulino to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Deivy Pena | — | Kansas City Royals | Kansas City Royals signed free agent SS Deivy Pena to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Rito Lugo | — | Kansas City Royals | Kansas City Royals signed free agent LHP Rito Lugo to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Jaswel De Los Santos | — | Kansas City Royals | Kansas City Royals signed free agent OF Jaswel De Los Santos to a minor league contract. |
| Jul 3, 2018 | Signed | Brady Singer | — | Kansas City Royals | Kansas City Royals signed RHP Brady Singer. |
| Jul 3, 2018 | Signed | Eric Cole | — | Kansas City Royals | Kansas City Royals signed OF Eric Cole. |
| Jul 2, 2018 | Signed | Jackson Kowar | — | Kansas City Royals | Kansas City Royals signed RHP Jackson Kowar. |
| Jul 2, 2018 | Signed as free agent | Fraicy Breton | — | Kansas City Royals | Kansas City Royals signed free agent LHP Fraicy Breton to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Cal Maduro | — | Kansas City Royals | Kansas City Royals signed free agent RHP Cal Maduro to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Wilmin Candelario | — | Kansas City Royals | Kansas City Royals signed free agent SS Wilmin Candelario to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Pedro Cordero | — | Kansas City Royals | Kansas City Royals signed free agent RHP Pedro Cordero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Frandy Cuevas | — | Kansas City Royals | Kansas City Royals signed free agent LHP Frandy Cuevas to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis De La Rosa | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luis De La Rosa to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Omar Florentino | — | Kansas City Royals | Kansas City Royals signed free agent SS Omar Florentino to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Freites | — | Kansas City Royals | Kansas City Royals signed free agent OF Jose Freites to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jun 29, 2018 | Signed as free agent | Yesi Medina | — | Kansas City Royals | Kansas City Royals signed free agent C Yesi Medina to a minor league contract. |
| Jun 29, 2018 | Signed | Rylan Kaufman | — | Kansas City Royals | Kansas City Royals signed LHP Rylan Kaufman. |
| Jun 21, 2018 | Trade | Brandon Downes | Kansas City Royals | Atlanta Braves | Kansas City Royals traded CF Brandon Downes to Atlanta Braves. |
| Jun 20, 2018 | Signed | Kris Bubic | — | Kansas City Royals | Kansas City Royals signed LHP Kris Bubic. |
| Jun 19, 2018 | Signed as free agent | Eduard Rosillo | — | Kansas City Royals | Kansas City Royals signed free agent RHP Eduard Rosillo to a minor league contract. |
| Jun 19, 2018 | Signed as free agent | Juan Carlos Negret | — | Kansas City Royals | Kansas City Royals signed free agent OF Juan Carlos Negret to a minor league contract. |
| Jun 19, 2018 | Signed | David Hollie | — | Kansas City Royals | Kansas City Royals signed OF David Hollie. |
| Jun 19, 2018 | Signed | Kevon Jackson | — | Kansas City Royals | Kansas City Royals signed OF Kevon Jackson. |
| Jun 18, 2018 | Signed | Jonathan Heasley | — | Kansas City Royals | Kansas City Royals signed RHP Jon Heasley. |
| Jun 18, 2018 | Signed as free agent | Logan Porter | — | Kansas City Royals | Kansas City Royals signed free agent C Logan Porter to a minor league contract. |
| Jun 18, 2018 | Signed as free agent | Stephan Vidal | — | Kansas City Royals | Kansas City Royals signed free agent C Stephan Vidal to a minor league contract. |
| Jun 18, 2018 | Trade | Blake Perkins | Washington Nationals | Kansas City Royals | Kansas City Royals traded RHP Kelvin Herrera to Washington Nationals for 3B Kelvin Gutierrez, CF Blake Perkins and RHP Yohanse Morel. |
| Jun 16, 2018 | Signed as free agent | Colby Schultz | — | Kansas City Royals | Kansas City Royals signed free agent SS Colby Schultz to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Andy LaRoche | — | Kansas City Royals | Kansas City Royals signed free agent 3B Andy LaRoche to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Jean Ramirez | — | Kansas City Royals | Kansas City Royals signed free agent OF Jean Ramirez to a minor league contract. |
| Jun 12, 2018 | Signed | Gage Hughes | — | Kansas City Royals | Kansas City Royals signed SS Gage Hughes. |
| Jun 10, 2018 | Signed | Daniel Lynch IV | — | Kansas City Royals | Kansas City Royals signed LHP Daniel Lynch. |
| Jun 10, 2018 | Signed | Jonathan Bowlan | — | Kansas City Royals | Kansas City Royals signed RHP Jonathan Bowlan. |
| Jun 10, 2018 | Signed | Kyle Isbel | — | Kansas City Royals | Kansas City Royals signed OF Kyle Isbel. |
| Jun 10, 2018 | Signed | Austin Cox | — | Kansas City Royals | Kansas City Royals signed LHP Austin Cox. |
| Jun 10, 2018 | Signed | Tyler Gray | — | Kansas City Royals | Kansas City Royals signed RHP Tyler Gray. |
| Jun 10, 2018 | Signed | Zach Haake | — | Kansas City Royals | Kansas City Royals signed RHP Zach Haake. |
| Jun 10, 2018 | Signed | Jackson Lueck | — | Kansas City Royals | Kansas City Royals signed LF Jackson Lueck. |
| Jun 10, 2018 | Signed | Austin Lambright | — | Kansas City Royals | Kansas City Royals signed LHP Austin Lambright. |
| Jun 10, 2018 | Signed | Michael Emodi | — | Kansas City Royals | Kansas City Royals signed C Michael Emodi. |
| Jun 10, 2018 | Signed | Christian Cosby | — | Kansas City Royals | Kansas City Royals signed RHP Christian Cosby. |
| Jun 10, 2018 | Signed | Kyle Hinton | — | Kansas City Royals | Kansas City Royals signed RHP Kyle Hinton. |
| Jun 10, 2018 | Signed | Noah Bryant | — | Kansas City Royals | Kansas City Royals signed RHP Noah Bryant. |
| Jun 10, 2018 | Signed | Nate Eaton | — | Kansas City Royals | Kansas City Royals signed C Nathan Eaton. |
| Jun 10, 2018 | Signed | Bryce Hensley | — | Kansas City Royals | Kansas City Royals signed LHP Bryce Hensley. |
| Jun 10, 2018 | Signed | Josh Dye | — | Kansas City Royals | Kansas City Royals signed LHP Josh Dye. |
| Jun 10, 2018 | Signed | Hunter Strong | — | Kansas City Royals | Kansas City Royals signed OF Hunter Strong. |
| Jun 10, 2018 | Signed | Daniel James | — | Kansas City Royals | Kansas City Royals signed RHP Daniel James. |
| Jun 10, 2018 | Signed | Derrick Adams | — | Kansas City Royals | Kansas City Royals signed LHP Derrick Adams. |
| Jun 10, 2018 | Signed | Andrés Núñez | — | Kansas City Royals | Kansas City Royals signed RHP Andres Nunez. |
| Jun 10, 2018 | Signed | Rhett Aplin | — | Kansas City Royals | Kansas City Royals signed OF Rhett Aplin. |
| Jun 10, 2018 | Signed | William Hancock | — | Kansas City Royals | Kansas City Royals signed C William Hancock. |
| Jun 10, 2018 | Signed | Kyle Kasser | — | Kansas City Royals | Kansas City Royals signed SS Kyle Kasser. |
| Jun 10, 2018 | Signed | Brhet Bewley | — | Kansas City Royals | Kansas City Royals signed IF Brhet Bewley. |
| Jun 10, 2018 | Signed | Ted Cillis | — | Kansas City Royals | Kansas City Royals signed LHP Ted Cillis. |
| Jun 7, 2018 | Signed as free agent | Ruben De Leon | — | Kansas City Royals | Kansas City Royals signed free agent SS Ruben De Leon to a minor league contract. |
| Jun 6, 2018 | Trade | Gabe Speier | Arizona Diamondbacks | Kansas City Royals | Kansas City Royals traded LF Jon Jay to Arizona Diamondbacks for Elvis Luciano and Gabe Speier. |
| Jun 1, 2018 | Signed as free agent | Jose Florian | — | Kansas City Royals | Kansas City Royals signed free agent 1B Jose Florian to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| May 19, 2018 | Signed as free agent | Michael Mariot | — | Kansas City Royals | Kansas City Royals signed free agent RHP Michael Mariot to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Apr 24, 2018 | Signed as free agent | Oscar Valenzuela | — | Kansas City Royals | Kansas City Royals signed free agent RHP Oscar Valenzuela to a minor league contract. |
| Apr 13, 2018 | Signed as free agent | Tarik El-Abour | — | Kansas City Royals | Kansas City Royals signed free agent OF Tarik El-Abour to a minor league contract. |
| Apr 11, 2018 | Signed as free agent | Luis Hernandez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luis Hernandez to a minor league contract. |
| Apr 9, 2018 | Signed as free agent | Edgar Martinez | — | Kansas City Royals | Kansas City Royals signed free agent 2B Edgar Martinez to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Kyle Zimmer | — | Kansas City Royals | Kansas City Royals signed free agent RHP Kyle Zimmer to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Daury Cabrera | — | Kansas City Royals | Kansas City Royals signed free agent RHP Daury Cabrera to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Ronaldo Ceballos | — | Kansas City Royals | Kansas City Royals signed free agent RHP Ronaldo Ceballos to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Gustavo Polanco | — | Kansas City Royals | Kansas City Royals signed free agent P Gustavo Polanco to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Junior Almonte | — | Kansas City Royals | Kansas City Royals signed free agent RHP Junior Almonte to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Javier Vasquez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Javier Vasquez to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Jaret Hellinger | — | Kansas City Royals | Kansas City Royals signed free agent LHP Jaret Hellinger to a minor league contract. |
| Apr 4, 2018 | Trade | Cody Asche | Kansas City Royals | New York Yankees | Kansas City Royals traded 3B Cody Asche to New York Yankees for Future Considerations. |
| Apr 4, 2018 | Trade | Miguel Almonte | Kansas City Royals | Los Angeles Angels | Kansas City Royals traded RHP Miguel Almonte to Los Angeles Angels for cash. |
| Apr 4, 2018 | Signed as free agent | Malcom Culver | — | Kansas City Royals | Kansas City Royals signed free agent SS Malcom Culver to a minor league contract. |
| Apr 3, 2018 | Released | Kyle Zimmer | — | Kansas City Royals | Kansas City Royals released RHP Kyle Zimmer. |
| Apr 3, 2018 | Signed as free agent | Kyle Lohse | — | Kansas City Royals | Kansas City Royals signed free agent RHP Kyle Lohse to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Andres Diaz | — | Kansas City Royals | Kansas City Royals signed free agent RHP Andres Diaz to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Jesus Roman | — | Kansas City Royals | Kansas City Royals signed free agent LHP Jesus Roman to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Mar 31, 2018 | Signed as free agent | Heribert Garcia | — | Kansas City Royals | Kansas City Royals signed free agent RHP Heribert Garcia to a minor league contract. |
| Mar 30, 2018 | Trade | Darrell Miller | Kansas City Royals | Los Angeles Dodgers | Kansas City Royals traded DH Darrell Miller to Los Angeles Dodgers. |
| Mar 24, 2018 | Released | Michael Saunders | — | Kansas City Royals | Kansas City Royals released RF Michael Saunders. |
| Mar 24, 2018 | Released | Ricky Nolasco | — | Kansas City Royals | Kansas City Royals released RHP Ricky Nolasco. |
| Mar 22, 2018 | Trade | Sam Gaviglio | Kansas City Royals | Toronto Blue Jays | Kansas City Royals traded RHP Sam Gaviglio to Toronto Blue Jays for Player To Be Named Later. |
| Mar 22, 2018 | Trade | Matt Tenuta | Kansas City Royals | Seattle Mariners | Kansas City Royals traded RHP Ashton Goudeau and LHP Matt Tenuta to Seattle Mariners. |
| Mar 20, 2018 | Trade | Colin Rodgers | Kansas City Royals | Seattle Mariners | Kansas City Royals traded LHP Colin Rodgers to Seattle Mariners. |
| Mar 20, 2018 | Trade | Robby Rinn | Kansas City Royals | Minnesota Twins | Kansas City Royals traded 1B Robby Rinn to Minnesota Twins. |
| Mar 18, 2018 | Signed as free agent | Justin Grimm | — | Kansas City Royals | Kansas City Royals signed free agent RHP Justin Grimm. |
| Mar 10, 2018 | Signed | Mike Moustakas | — | Kansas City Royals | Kansas City Royals signed 3B Mike Moustakas. |
| Mar 8, 2018 | Signed as free agent | Jose Ramirez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jose Ramirez to a minor league contract. |
| Mar 7, 2018 | Signed as free agent | Ricky Nolasco | — | Kansas City Royals | Kansas City Royals signed free agent RHP Ricky Nolasco to a minor league contract and invited him to spring training. |
| Mar 7, 2018 | Signed as free agent | Marcelo Martinez | — | Kansas City Royals | Kansas City Royals signed free agent LHP Marcelo Martinez to a minor league contract. |
| Mar 6, 2018 | Signed as free agent | Jon Jay | — | Kansas City Royals | Kansas City Royals signed free agent LF Jon Jay. |
| Mar 5, 2018 | Signed as free agent | Yordy Guaba | — | Kansas City Royals | Kansas City Royals signed free agent RHP Yordy Guaba to a minor league contract. |
| Mar 4, 2018 | Signed as free agent | Emilio Marquez | — | Kansas City Royals | Kansas City Royals signed free agent LHP Emilio Marquez to a minor league contract. |
| Mar 3, 2018 | Signed as free agent | Luinder Avila | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luinder Avila to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Feb 28, 2018 | Trade | Unnamed | Texas Rangers | Kansas City Royals | Texas Rangers traded and RHP Domingo Pena to Kansas City Royals. |
| Feb 28, 2018 | Signed as free agent | Lucas Duda | — | Kansas City Royals | Kansas City Royals signed free agent 1B Lucas Duda. |
| Feb 10, 2018 | Signed as free agent | Axsel Jimenez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Axsel Jimenez to a minor league contract. |
| Feb 8, 2018 | Signed as free agent | Blaine Boyer | — | Kansas City Royals | Kansas City Royals signed free agent RHP Blaine Boyer to a minor league contract and invited him to spring training. |
| Feb 5, 2018 | Signed as free agent | Wanly Perez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Wanly Perez to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jan 31, 2018 | Signed as free agent | Carlos Benua | — | Kansas City Royals | Kansas City Royals signed free agent RHP Carlos Benua to a minor league contract. |
| Jan 31, 2018 | Signed as free agent | Nolan Becker | — | Kansas City Royals | Kansas City Royals signed free agent LHP Nolan Becker to a minor league contract. |
| Jan 31, 2018 | Signed as free agent | Jacob Condra-Bogan | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jacob Condra-Bogan to a minor league contract. |
| Jan 30, 2018 | Signed as free agent | Cruz Noriega | — | Kansas City Royals | Kansas City Royals signed free agent RHP Cruz Noriega to a minor league contract. |
| Jan 29, 2018 | Signed as free agent | Alcides Escobar | — | Kansas City Royals | Kansas City Royals signed free agent SS Alcides Escobar. |
| Jan 29, 2018 | Trade | Brandon Moss | Kansas City Royals | Athletics | Kansas City Royals traded DH Brandon Moss, LHP Ryan Buchter and cash to Oakland Athletics for RHP Heath Fillmyer and RHP Jesse Hahn. |
| Jan 28, 2018 | Signed as free agent | Cesar Camargo | — | Kansas City Royals | Kansas City Royals signed free agent RHP Cesar Camargo to a minor league contract. |
| Jan 25, 2018 | Signed as free agent | Ryan Goins | — | Kansas City Royals | Kansas City Royals signed free agent SS Ryan Goins to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Tyler Collins | — | Kansas City Royals | Kansas City Royals signed free agent OF Tyler Collins to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Clayton Mortensen | — | Kansas City Royals | Kansas City Royals signed free agent RHP Clayton Mortensen to a minor league contract. |
| Jan 13, 2018 | Signed as free agent | Luis Barroso | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luis Barroso to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Guillermo Fernandez | — | Kansas City Royals | Kansas City Royals signed free agent SS Guillermo Fernandez to a minor league contract. |
| Jan 5, 2018 | Signed as free agent | Seth Maness | — | Kansas City Royals | Kansas City Royals signed free agent RHP Seth Maness to a minor league contract and invited him to spring training. |
Every row is captured from MLB’s official StatsAPI transactions feed with MLB’s published description unedited. A trade appears on both clubs’ pages for the season; signings include both major-league and minor-league contracts signed with the club; injury-list moves and minor-league affiliate-only transactions are outside this archive’s scope.
Transaction data: official MLB StatsAPI. Data provided by MLB Advanced Media. Archived and published by Legends Deck. Kept transaction types: Trade, Signed, Signed as free agent, Released.