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Every official 2017 MLB transaction involving the Seattle Mariners on either side of the move: 126 trades, signings and releases dated and grouped by month, with MLB’s own description of each move. Both directions are covered: 108 moves land with the Mariners and 18 depart from them.
Showing 126 of 126 Seattle Mariners transactions
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Mar 6, 2018 | Trade | Thyago Vieira | Seattle Mariners | Chicago White Sox | Seattle Mariners traded RHP Thyago Vieira to Chicago White Sox for cash. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 23, 2017 | Signed as free agent | Jheyson Caraballo | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jheyson Caraballo to a minor league contract. |
| Dec 22, 2017 | Signed as free agent | Edwin Gil | — | Seattle Mariners | Seattle Mariners signed free agent SS Edwin Gil to a minor league contract. |
| Dec 20, 2017 | Signed as free agent | Juan Nicasio | — | Seattle Mariners | Seattle Mariners signed free agent RHP Juan Nicasio. |
| Dec 18, 2017 | Released | Andrew Albers | — | Seattle Mariners | Seattle Mariners released LHP Andrew Albers. |
| Dec 13, 2017 | Trade | Anthony Misiewicz | Tampa Bay Rays | Seattle Mariners | Tampa Bay Rays traded LHP Anthony Misiewicz to Seattle Mariners for Future Considerations. |
| Dec 13, 2017 | Trade | Shawn Armstrong | Cleveland Guardians | Seattle Mariners | Cleveland Indians traded RHP Shawn Armstrong to Seattle Mariners for Future Considerations. |
| Dec 10, 2017 | Released | Seth Frankoff | — | Seattle Mariners | Seattle Mariners released RHP Seth Frankoff. |
| Dec 7, 2017 | Trade | Robert Dugger | Seattle Mariners | Miami Marlins | Miami Marlins traded CF Dee Gordon and Future Considerations to Seattle Mariners for RHP Nick Neidert, RHP Robert Dugger and Chris Torres. |
| Dec 6, 2017 | Trade | David Bañuelos | Seattle Mariners | Minnesota Twins | Seattle Mariners traded C David Banuelos to Minnesota Twins for Future Considerations. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Nov 27, 2017 | Signed as free agent | Hisashi Iwakuma | — | Seattle Mariners | Seattle Mariners signed free agent RHP Hisashi Iwakuma to a minor league contract and invited him to spring training. |
| Nov 18, 2017 | Trade | JP Sears | Seattle Mariners | New York Yankees | Seattle Mariners traded LHP JP Sears and RHP Juan Then to New York Yankees for RHP Nick Rumbelow. |
| Nov 18, 2017 | Signed as free agent | Yonathan Mendoza | — | Seattle Mariners | Seattle Mariners signed free agent 3B Yonathan Mendoza to a minor league contract. |
| Nov 15, 2017 | Trade | Alexander Campos | Seattle Mariners | Athletics | Oakland Athletics traded 1B Ryon Healy to Seattle Mariners for SS Alexander Campos and RHP Emilio Pagan. |
| Nov 15, 2017 | Signed as free agent | Anderson Mercedes | — | Seattle Mariners | Seattle Mariners signed free agent LHP Anderson Mercedes to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Oct 5, 2017 | Trade | Osmy Gregorio | Seattle Mariners | Tampa Bay Rays | Seattle Mariners traded SS Osmy Gregorio to Tampa Bay Rays. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Sep 25, 2017 | Signed as free agent | Raúl Alcantara | — | Seattle Mariners | Seattle Mariners signed free agent LHP Raul Alcantara to a minor league contract. |
| Sep 5, 2017 | Released | Evan Scribner | — | Seattle Mariners | Seattle Mariners released RHP Evan Scribner. |
| Sep 1, 2017 | Trade | Leonys Martin | Seattle Mariners | Chicago Cubs | Seattle Mariners traded CF Leonys Martin and cash to Chicago Cubs for Player To Be Named Later and cash. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Aug 30, 2017 | Trade | Rayder Ascanio | Seattle Mariners | St. Louis Cardinals | St. Louis Cardinals traded RHP Mike Leake and Future Considerations to Seattle Mariners for SS Rayder Ascanio. |
| Aug 24, 2017 | Signed as free agent | Ray Kerr | — | Seattle Mariners | Seattle Mariners signed free agent LHP Raymond Kerr to a minor league contract. |
| Aug 20, 2017 | Released | Danny Espinosa | — | Seattle Mariners | Seattle Mariners released 2B Danny Espinosa. |
| Aug 18, 2017 | Signed as free agent | Ashur Tolliver | — | Seattle Mariners | Seattle Mariners signed free agent LHP Ashur Tolliver to a minor league contract. |
| Aug 16, 2017 | Signed as free agent | Ralston Cash | — | Seattle Mariners | Seattle Mariners signed free agent RHP Ralston Cash to a minor league contract. |
| Aug 12, 2017 | Signed as free agent | Jeanmar Gómez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jeanmar Gomez. |
| Aug 8, 2017 | Trade | Ernesto Frieri | Texas Rangers | Seattle Mariners | Texas Rangers traded RHP Ernesto Frieri to Seattle Mariners for cash. |
| Aug 6, 2017 | Trade | Yonder Alonso | Athletics | Seattle Mariners | Oakland Athletics traded 1B Yonder Alonso to Seattle Mariners for CF Boog Powell. |
| Aug 6, 2017 | Trade | Ryan Garton | Tampa Bay Rays | Seattle Mariners | Tampa Bay Rays traded C Mike Marjama and RHP Ryan Garton to Seattle Mariners for Player To Be Named Later, LHP Anthony Misiewicz and 2B Luis Rengifo. |
| Aug 5, 2017 | Signed as free agent | Scott Kuzminsky | — | Seattle Mariners | Seattle Mariners signed free agent RHP Scott Kuzminsky to a minor league contract. |
| Aug 5, 2017 | Signed as free agent | Brian McAfee | — | Seattle Mariners | Seattle Mariners signed free agent RHP Brian McAfee to a minor league contract. |
| Aug 4, 2017 | Signed as free agent | George Capen | — | Seattle Mariners | Seattle Mariners signed free agent RHP George Capen to a minor league contract. |
| Aug 4, 2017 | Signed as free agent | AJ Franks | — | Seattle Mariners | Seattle Mariners signed free agent RHP AJ Franks to a minor league contract. |
| Aug 4, 2017 | Signed as free agent | Mitch Viydo | — | Seattle Mariners | Seattle Mariners signed free agent RHP Mitch Viydo to a minor league contract. |
| Aug 2, 2017 | Signed as free agent | Bryan Evans | — | Seattle Mariners | Seattle Mariners signed free agent RHP Bryan Evans to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jul 30, 2017 | Signed as free agent | Aaron West | — | Seattle Mariners | Seattle Mariners signed free agent RHP Aaron West to a minor league contract. |
| Jul 29, 2017 | Trade | Erasmo Ramírez | Tampa Bay Rays | Seattle Mariners | Seattle Mariners traded RHP Steve Cishek to Tampa Bay Rays for RHP Erasmo Ramirez. |
| Jul 26, 2017 | Signed | Michael Fairchild | — | Seattle Mariners | Seattle Mariners signed RHP Michael Fairchild. |
| Jul 24, 2017 | Trade | Jean Machi | Seattle Mariners | Chicago White Sox | Seattle Mariners traded RHP Jean Machi and RHP Mark Lowe to Chicago White Sox for cash. |
| Jul 24, 2017 | Signed as free agent | Danny Espinosa | — | Seattle Mariners | Seattle Mariners signed free agent 2B Danny Espinosa. |
| Jul 21, 2017 | Trade | Tyler O'Neill | Seattle Mariners | St. Louis Cardinals | St. Louis Cardinals traded LHP Marco Gonzales to Seattle Mariners for RF Tyler O'Neill. |
| Jul 21, 2017 | Signed as free agent | Luis Baez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Luis Baez to a minor league contract. |
| Jul 20, 2017 | Trade | David Phelps | Miami Marlins | Seattle Mariners | Miami Marlins traded RHP David Phelps to Seattle Mariners for RHP Brandon Miller, CF Brayan Hernandez, RHP Lukas Schiraldi and RHP Pablo Lopez. |
| Jul 7, 2017 | Signed as free agent | Deivy Florido | — | Seattle Mariners | Seattle Mariners signed free agent RHP Deivy Florido to a minor league contract. |
| Jul 3, 2017 | Trade | James Lovett | Philadelphia Phillies | Seattle Mariners | Philadelphia Phillies traded IF James Lovett to Seattle Mariners. |
| Jul 3, 2017 | Trade | Tyler Herb | Seattle Mariners | San Francisco Giants | Seattle Mariners traded RHP Tyler Herb to San Francisco Giants for cash. |
| Jul 2, 2017 | Signed as free agent | Juan Querecuto | — | Seattle Mariners | Seattle Mariners signed free agent SS Juan Querecuto to a minor league contract. |
| Jul 2, 2017 | Signed as free agent | Brayan Perez | — | Seattle Mariners | Seattle Mariners signed free agent LHP Brayan Perez to a minor league contract. |
| Jul 2, 2017 | Signed as free agent | Yeury Tatiz | — | Seattle Mariners | Seattle Mariners signed free agent RHP Yeury Tatiz to a minor league contract. |
| Jul 2, 2017 | Signed as free agent | Julio Rodríguez | — | Seattle Mariners | Seattle Mariners signed free agent OF Julio Rodriguez to a minor league contract. |
| Jul 2, 2017 | Signed as free agent | Joseph Hernandez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Joseph Hernandez to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jun 29, 2017 | Signed as free agent | Clay Chandler | — | Seattle Mariners | Seattle Mariners signed free agent RHP Clay Chandler to a minor league contract. |
| Jun 29, 2017 | Signed as free agent | Aaron Stroosma | — | Seattle Mariners | Seattle Mariners signed free agent OF Aaron Stroosma to a minor league contract. |
| Jun 29, 2017 | Signed as free agent | Tyler Jackson | — | Seattle Mariners | Seattle Mariners signed free agent RHP Tyler Jackson to a minor league contract. |
| Jun 25, 2017 | Signed | Jamal Wade | — | Seattle Mariners | Seattle Mariners signed RHP Jamal Wade. |
| Jun 24, 2017 | Signed | Orlando Razo | — | Seattle Mariners | Seattle Mariners signed LHP Orlando Razo. |
| Jun 24, 2017 | Signed | Tommy Romero | — | Seattle Mariners | Seattle Mariners signed RHP Tommy Romero. |
| Jun 24, 2017 | Signed | Chris Castellanos | — | Seattle Mariners | Seattle Mariners signed LHP Chris Castellanos. |
| Jun 22, 2017 | Signed as free agent | Manny Pazos | — | Seattle Mariners | Seattle Mariners signed free agent C Manny Pazos to a minor league contract. |
| Jun 21, 2017 | Signed | Sam Carlson | — | Seattle Mariners | Seattle Mariners signed RHP Sam Carlson. |
| Jun 19, 2017 | Signed as free agent | Jack Larsen | — | Seattle Mariners | Seattle Mariners signed free agent OF Jack Larsen to a minor league contract. |
| Jun 18, 2017 | Signed | Evan White | — | Seattle Mariners | Seattle Mariners signed 1B Evan White. |
| Jun 18, 2017 | Signed | Wyatt Mills | — | Seattle Mariners | Seattle Mariners signed RHP Wyatt Mills. |
| Jun 18, 2017 | Signed | Seth Elledge | — | Seattle Mariners | Seattle Mariners signed RHP Seth Elledge. |
| Jun 18, 2017 | Signed | David Bañuelos | — | Seattle Mariners | Seattle Mariners signed C David Banuelos. |
| Jun 18, 2017 | Signed | Oliver Jaskie | — | Seattle Mariners | Seattle Mariners signed LHP Oliver Jaskie. |
| Jun 18, 2017 | Signed | Max Roberts | — | Seattle Mariners | Seattle Mariners signed LHP Max Roberts. |
| Jun 18, 2017 | Signed | Billy Cooke | — | Seattle Mariners | Seattle Mariners signed CF Billy Cooke. |
| Jun 18, 2017 | Signed | Jorge Benitez | — | Seattle Mariners | Seattle Mariners signed LHP Jorge Benitez. |
| Jun 18, 2017 | Signed | Randy Bell | — | Seattle Mariners | Seattle Mariners signed RHP Randy Bell. |
| Jun 18, 2017 | Signed | JP Sears | — | Seattle Mariners | Seattle Mariners signed LHP JP Sears. |
| Jun 18, 2017 | Signed | Darren McCaughan | — | Seattle Mariners | Seattle Mariners signed RHP Darren McCaughan. |
| Jun 18, 2017 | Signed | Kevin Santa | — | Seattle Mariners | Seattle Mariners signed SS Kevin Santa. |
| Jun 18, 2017 | Signed | Troy Dixon | — | Seattle Mariners | Seattle Mariners signed C Troy Dixon. |
| Jun 18, 2017 | Signed | Connor Hoover | — | Seattle Mariners | Seattle Mariners signed SS Connor Hoover. |
| Jun 18, 2017 | Signed | Johnny Adams | — | Seattle Mariners | Seattle Mariners signed SS Johnny Adams. |
| Jun 18, 2017 | Signed | Sam Delaplane | — | Seattle Mariners | Seattle Mariners signed RHP Sam Delaplane. |
| Jun 18, 2017 | Signed | Louis Boyd | — | Seattle Mariners | Seattle Mariners signed SS Louis Boyd. |
| Jun 18, 2017 | Signed | Bryan Pall | — | Seattle Mariners | Seattle Mariners signed RHP Bryan Pall. |
| Jun 18, 2017 | Signed | Austin Hutchison | — | Seattle Mariners | Seattle Mariners signed RHP Austin Hutchison. |
| Jun 18, 2017 | Signed | Collin Kober | — | Seattle Mariners | Seattle Mariners signed RHP Collin Kober. |
| Jun 18, 2017 | Signed | Johnny Slater | — | Seattle Mariners | Seattle Mariners signed CF Johnny Slater. |
| Jun 18, 2017 | Signed | David Gerber | — | Seattle Mariners | Seattle Mariners signed RHP David Gerber. |
| Jun 18, 2017 | Signed | Scott Boches | — | Seattle Mariners | Seattle Mariners signed RHP Scott Boches. |
| Jun 18, 2017 | Signed | Ryan Costello | — | Seattle Mariners | Seattle Mariners signed 3B Ryan Costello. |
| Jun 18, 2017 | Signed | Ryan Garcia | — | Seattle Mariners | Seattle Mariners signed 1B Ryan Garcia. |
| Jun 18, 2017 | Signed | David Hesslink | — | Seattle Mariners | Seattle Mariners signed LHP David Hesslink. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| May 25, 2017 | Signed as free agent | Melquiades Escobar | — | Seattle Mariners | Seattle Mariners signed free agent RHP Melquiades Escobar to a minor league contract. |
| May 24, 2017 | Trade | Andrew Aplin | Houston Astros | Seattle Mariners | Houston Astros traded CF Andrew Aplin to Seattle Mariners for Player To Be Named Later. |
| May 24, 2017 | Signed as free agent | Jeff Kobernus | — | Seattle Mariners | Seattle Mariners signed free agent LF Jeff Kobernus to a minor league contract. |
| May 21, 2017 | Signed as free agent | Keury De La Cruz | — | Seattle Mariners | Seattle Mariners signed free agent LF Keury De La Cruz to a minor league contract. |
| May 19, 2017 | Signed as free agent | Fabian Roman | — | Seattle Mariners | Seattle Mariners signed free agent RHP Fabian Roman to a minor league contract. |
| May 18, 2017 | Signed | Ryan Kelly | — | Seattle Mariners | Seattle Mariners signed RHP Ryan Kelly. |
| May 13, 2017 | Signed as free agent | Austin Kubitza | — | Seattle Mariners | Seattle Mariners signed free agent RHP Austin Kubitza to a minor league contract. |
| May 12, 2017 | Signed as free agent | Tyler Cloyd | — | Seattle Mariners | Seattle Mariners signed free agent RHP Tyler Cloyd to a minor league contract. |
| May 11, 2017 | Signed as free agent | Justin De Fratus | — | Seattle Mariners | Seattle Mariners signed free agent RHP Justin DeFratus to a minor league contract. |
| May 11, 2017 | Signed as free agent | Danny Muno | — | Seattle Mariners | Seattle Mariners signed free agent 3B Danny Muno to a minor league contract. |
| May 10, 2017 | Signed as free agent | Tyler Watson | — | Seattle Mariners | Seattle Mariners signed free agent LHP Tyler Watson to a minor league contract. |
| May 9, 2017 | Trade | Casey Fien | Seattle Mariners | Philadelphia Phillies | Seattle Mariners traded RHP Casey Fien to Philadelphia Phillies for cash. |
| May 9, 2017 | Trade | Bryan Bonnell | Tampa Bay Rays | Seattle Mariners | Tampa Bay Rays traded RHP Bryan Bonnell to Seattle Mariners for Future Considerations. |
| May 8, 2017 | Signed as free agent | Christian Pedrol | — | Seattle Mariners | Seattle Mariners signed free agent RHP Christian Pedrol to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Apr 21, 2017 | Signed as free agent | Juan Mercedes | — | Seattle Mariners | Seattle Mariners signed free agent RHP Juan Mercedes to a minor league contract. |
| Apr 21, 2017 | Signed as free agent | Jesus Ozoria | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jesus Ozoria to a minor league contract. |
| Apr 17, 2017 | Signed as free agent | Nelson Ward | — | Seattle Mariners | Seattle Mariners signed free agent 2B Nelson Ward to a minor league contract. |
| Apr 14, 2017 | Trade | Paul Fry | Seattle Mariners | Baltimore Orioles | Seattle Mariners traded LHP Paul Fry to Baltimore Orioles for Future Considerations. |
| Apr 1, 2017 | Signed as free agent | Mark Lowe | — | Seattle Mariners | Seattle Mariners signed free agent RHP Mark Lowe to a minor league contract. |
| Apr 1, 2017 | Signed as free agent | Kelvin Nunez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Kelvin Nunez to a minor league contract. |
| Apr 1, 2017 | Signed as free agent | Freiquik Sanchez | — | Seattle Mariners | Seattle Mariners signed free agent LHP Freiquik Sanchez to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Mar 31, 2017 | Signed as free agent | Gordon Beckham | — | Seattle Mariners | Seattle Mariners signed free agent 2B Gordon Beckham to a minor league contract. |
| Mar 16, 2017 | Signed as free agent | Dayeison Arias | — | Seattle Mariners | Seattle Mariners signed free agent RHP Dayeison Arias to a minor league contract. |
| Mar 15, 2017 | Signed as free agent | Joey Wong | — | Seattle Mariners | Seattle Mariners signed free agent SS Joey Wong to a minor league contract. |
| Mar 12, 2017 | Trade | Pat Venditte | Seattle Mariners | Philadelphia Phillies | Philadelphia Phillies traded RF Joey Curletta to Seattle Mariners for SHP Pat Venditte. |
| Mar 1, 2017 | Trade | Aneurys Zabala | Seattle Mariners | Los Angeles Dodgers | Los Angeles Dodgers traded RHP Chase De Jong to Seattle Mariners for RHP Aneurys Zabala and SS Drew Jackson. |
| Mar 1, 2017 | Signed as free agent | Brandon Sisk | — | Seattle Mariners | Seattle Mariners signed free agent LHP Brandon Sisk to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Feb 23, 2017 | Signed as free agent | Freuddy Batista | — | Seattle Mariners | Seattle Mariners signed free agent C Freuddy Batista to a minor league contract. |
| Feb 23, 2017 | Signed as free agent | Jepherson Garcia | — | Seattle Mariners | Seattle Mariners signed free agent OF Jepherson Garcia to a minor league contract. |
| Feb 15, 2017 | Signed as free agent | Josh Judy | — | Seattle Mariners | Seattle Mariners signed free agent RHP Josh Judy to a minor league contract. |
| Feb 8, 2017 | Trade | Jesús Sucre | Seattle Mariners | Tampa Bay Rays | Seattle Mariners traded C Jesus Sucre to Tampa Bay Rays for Player To Be Named Later. |
| Feb 8, 2017 | Signed as free agent | Ryan Scott | — | Seattle Mariners | Seattle Mariners signed free agent C Ryan Scott to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jan 31, 2017 | Signed as free agent | Nick Hagadone | — | Seattle Mariners | Seattle Mariners signed free agent LHP Nick Hagadone to a minor league contract and invited him to spring training. |
| Jan 26, 2017 | Trade | Jason Goldstein | Seattle Mariners | Athletics | Oakland Athletics traded LHP Dillon Overton to Seattle Mariners for C Jason Goldstein. |
| Jan 22, 2017 | Signed as free agent | Jean Machi | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jean Machi to a minor league contract and invited him to spring training. |
| Jan 11, 2017 | Trade | Mallex Smith | Atlanta Braves | Seattle Mariners | Atlanta Braves traded CF Mallex Smith and RHP Shae Simmons to Seattle Mariners for LHP Luiz Gohara and LHP Thomas Burrows. |
| Jan 11, 2017 | Trade | Ryan Yarbrough | Seattle Mariners | Tampa Bay Rays | Tampa Bay Rays traded LHP Drew Smyly to Seattle Mariners for SS Carlos Vargas, CF Mallex Smith and LHP Ryan Yarbrough. |
| Jan 11, 2017 | Signed as free agent | Willie Argo | — | Seattle Mariners | Seattle Mariners signed free agent LF Willie Argo to a minor league contract. |
| Jan 6, 2017 | Trade | Yovani Gallardo | Baltimore Orioles | Seattle Mariners | Seattle Mariners traded RF Seth Smith to Baltimore Orioles for RHP Yovani Gallardo and cash. |
| Jan 6, 2017 | Trade | Jarrod Dyson | Kansas City Royals | Seattle Mariners | Seattle Mariners traded RHP Nate Karns to Kansas City Royals for LF Jarrod Dyson. |
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.