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Every official 2023 MLB transaction involving the Seattle Mariners on either side of the move: 115 trades, signings and releases dated and grouped by month, with MLB’s own description of each move. Both directions are covered: 107 moves land with the Mariners and 8 depart from them.
Showing 115 of 115 Seattle Mariners transactions
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 28, 2023 | Signed as free agent | Mitch Garver | — | Seattle Mariners | Seattle Mariners signed free agent C Mitch Garver. |
| Dec 3, 2023 | Trade | Cole Phillips | Atlanta Braves | Seattle Mariners | Atlanta Braves traded RHP Cole Phillips and RHP Jackson Kowar to Seattle Mariners for LHP Marco Gonzales, OF Jarred Kelenic and 1B Evan White. |
| Dec 3, 2023 | Signed as free agent | Brett de Geus | — | Seattle Mariners | Seattle Mariners signed free agent RHP Brett de Geus to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Nov 22, 2023 | Trade | Eugenio Suárez | Seattle Mariners | Arizona Diamondbacks | Seattle Mariners traded 3B Eugenio Suárez to Arizona Diamondbacks for RHP Carlos Vargas and C Seby Zavala. |
| Nov 17, 2023 | Trade | Luis Urías | Boston Red Sox | Seattle Mariners | Boston Red Sox traded 3B Luis Urías to Seattle Mariners for RHP Isaiah Campbell. |
| Nov 16, 2023 | Signed as free agent | Rangel Ravelo | — | Seattle Mariners | Seattle Mariners signed free agent 1B Rangel Ravelo to a minor league contract. |
| Nov 13, 2023 | Signed as free agent | Nick Davila | — | Seattle Mariners | Seattle Mariners signed free agent RHP Nick Davila to a minor league contract. |
| Nov 6, 2023 | Trade | Blake Hunt | Tampa Bay Rays | Seattle Mariners | Tampa Bay Rays traded C Blake Hunt to Seattle Mariners for C Tatem Levins. |
| Nov 5, 2023 | Trade | Riley O'Brien | Seattle Mariners | St. Louis Cardinals | Seattle Mariners traded RHP Riley O'Brien to St. Louis Cardinals for cash. |
| Nov 2, 2023 | Trade | Cody Bolton | Pittsburgh Pirates | Seattle Mariners | Pittsburgh Pirates traded RHP Cody Bolton to Seattle Mariners for cash. |
| Nov 2, 2023 | Signed as free agent | Tyson Miller | — | Seattle Mariners | Seattle Mariners signed free agent RHP Tyson Miller to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Aug 30, 2023 | Signed as free agent | Luis Torrens | — | Seattle Mariners | Seattle Mariners signed free agent C Luis Torrens to a minor league contract. |
| Aug 22, 2023 | Signed as free agent | Luke Weaver | — | Seattle Mariners | Seattle Mariners signed free agent RHP Luke Weaver. |
| Aug 19, 2023 | Signed as free agent | Nick Wittgren | — | Seattle Mariners | Seattle Mariners signed free agent RHP Nick Wittgren to a minor league contract. |
| Aug 12, 2023 | Signed as free agent | Alex Valverde | — | Seattle Mariners | Seattle Mariners signed free agent RHP Alex Valverde to a minor league contract. |
| Aug 11, 2023 | Signed as free agent | Blas Castaño | — | Seattle Mariners | Seattle Mariners signed free agent RHP Blas Castano to a minor league contract. |
| Aug 10, 2023 | Signed as free agent | Jesse Wainscott | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jesse Wainscott to a minor league contract. |
| Aug 8, 2023 | Released | Matt Festa | — | Seattle Mariners | Seattle Mariners released RHP Matt Festa. |
| Aug 3, 2023 | Released | Kolten Wong | — | Seattle Mariners | Seattle Mariners released 2B Kolten Wong. |
| Aug 1, 2023 | Trade | Eduard Bazardo | Baltimore Orioles | Seattle Mariners | Baltimore Orioles traded RHP Eduard Bazardo to Seattle Mariners for RHP Logan Rinehart. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jul 31, 2023 | Trade | Mark Mathias | Seattle Mariners | San Francisco Giants | Seattle Mariners traded 2B Mark Mathias, CF AJ Pollock and cash to San Francisco Giants for Player To Be Named Later. |
| Jul 31, 2023 | Trade | Dominic Canzone | Arizona Diamondbacks | Seattle Mariners | Seattle Mariners traded RHP Paul Sewald to Arizona Diamondbacks for 2B Josh Rojas, RF Dominic Canzone and SS Ryan Bliss. |
| Jul 26, 2023 | Trade | Trent Thornton | Toronto Blue Jays | Seattle Mariners | Toronto Blue Jays traded RHP Trent Thornton to Seattle Mariners for SS Mason McCoy. |
| Jul 22, 2023 | Signed as free agent | Will Schomberg | — | Seattle Mariners | Seattle Mariners signed free agent RHP Will Schomberg to a minor league contract. |
| Jul 19, 2023 | Signed | Jonny Farmelo | — | Seattle Mariners | Seattle Mariners signed OF Jonny Farmelo. |
| Jul 18, 2023 | Signed | Colt Emerson | — | Seattle Mariners | Seattle Mariners signed SS Colt Emerson. |
| Jul 18, 2023 | Signed | Tai Peete | — | Seattle Mariners | Seattle Mariners signed SS Tai Peete. |
| Jul 18, 2023 | Signed | Ben Williamson | — | Seattle Mariners | Seattle Mariners signed 3B Ben Williamson. |
| Jul 18, 2023 | Signed | Teddy McGraw | — | Seattle Mariners | Seattle Mariners signed RHP Teddy McGraw. |
| Jul 18, 2023 | Signed | Aidan Smith | — | Seattle Mariners | Seattle Mariners signed OF Aidan Smith. |
| Jul 18, 2023 | Signed | Brock Rodden | — | Seattle Mariners | Seattle Mariners signed SS Brock Rodden. |
| Jul 18, 2023 | Signed | Brody Hopkins | — | Seattle Mariners | Seattle Mariners signed RHP Brody Hopkins. |
| Jul 18, 2023 | Signed | Ty Cummings | — | Seattle Mariners | Seattle Mariners signed RHP Ty Cummings. |
| Jul 18, 2023 | Signed | Ryan Hawks | — | Seattle Mariners | Seattle Mariners signed RHP Ryan Hawks. |
| Jul 18, 2023 | Signed | RJ Schreck | — | Seattle Mariners | Seattle Mariners signed OF RJ Schreck. |
| Jul 18, 2023 | Signed | Jared Sundstrom | — | Seattle Mariners | Seattle Mariners signed OF Jared Sundstrom. |
| Jul 18, 2023 | Signed | Brandyn Garcia | — | Seattle Mariners | Seattle Mariners signed LHP Brandyn Garcia. |
| Jul 18, 2023 | Signed | Logan Evans | — | Seattle Mariners | Seattle Mariners signed RHP Logan Evans. |
| Jul 18, 2023 | Signed | Elijah Dale | — | Seattle Mariners | Seattle Mariners signed RHP Elijah Dale. |
| Jul 18, 2023 | Signed | Ernie Day | — | Seattle Mariners | Seattle Mariners signed RHP Ernie Day. |
| Jul 18, 2023 | Signed | Carson Jones | — | Seattle Mariners | Seattle Mariners signed OF Carson Jones. |
| Jul 18, 2023 | Signed | Caleb Cali | — | Seattle Mariners | Seattle Mariners signed 3B Caleb Cali. |
| Jul 18, 2023 | Signed | Jacob Sharp | — | Seattle Mariners | Seattle Mariners signed C Jacob Sharp. |
| Jul 18, 2023 | Signed | Daniel Ouderkirk | — | Seattle Mariners | Seattle Mariners signed RHP Daniel Ouderkirk. |
| Jul 18, 2023 | Signed | Charlie Pagliarini | — | Seattle Mariners | Seattle Mariners signed 3B Charlie Pagliarini. |
| Jul 18, 2023 | Signed as free agent | Hunter Fitz-Gerald | — | Seattle Mariners | Seattle Mariners signed free agent 3B Hunter Fitz-Gerald to a minor league contract. |
| Jul 18, 2023 | Signed as free agent | German Fajardo | — | Seattle Mariners | Seattle Mariners signed free agent RHP German Fajardo to a minor league contract. |
| Jul 18, 2023 | Signed as free agent | Jarrod Belbin | — | Seattle Mariners | Seattle Mariners signed free agent 1B Jarrod Belbin to a minor league contract. |
| Jul 15, 2023 | Signed as free agent | Robert Emery | — | Seattle Mariners | Seattle Mariners signed free agent C Robert Emery to a minor league contract. |
| Jul 15, 2023 | Signed | Jacob McNairy | — | Seattle Mariners | Seattle Mariners signed RHP Jacob McNairy. |
| Jul 14, 2023 | Signed as free agent | Logan Allen | — | Seattle Mariners | Seattle Mariners signed free agent LHP Logan Allen to a minor league contract. |
| Jul 7, 2023 | Trade | Jack Larsen | Seattle Mariners | San Francisco Giants | Seattle Mariners traded OF Jack Larsen to San Francisco Giants. |
| Jul 4, 2023 | Trade | Unnamed | Los Angeles Dodgers | Seattle Mariners | Seattle Mariners traded SS Pat Valaika to Los Angeles Dodgers for cash. |
| Jul 3, 2023 | Trade | Chris Flexen | Seattle Mariners | New York Mets | Seattle Mariners traded RHP Trevor Gott and RHP Chris Flexen to New York Mets for LHP Zach Muckenhirn. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jun 15, 2023 | Trade | Kean Wong | Seattle Mariners | Chicago White Sox | Seattle Mariners traded 2B Kean Wong to Chicago White Sox. |
| Jun 9, 2023 | Signed as free agent | Shawn Semple | — | Seattle Mariners | Seattle Mariners signed free agent RHP Shawn Semple to a minor league contract. |
| Jun 8, 2023 | Signed as free agent | Didi Gregorius | — | Seattle Mariners | Seattle Mariners signed free agent SS Didi Gregorius to a minor league contract. |
| Jun 5, 2023 | Signed as free agent | Ryder Ryan | — | Seattle Mariners | Seattle Mariners signed free agent RHP Ryder Ryan to a minor league contract. |
| Jun 3, 2023 | Signed as free agent | Kyle Hart | — | Seattle Mariners | Seattle Mariners signed free agent LHP Kyle Hart to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| May 30, 2023 | Signed as free agent | Adam Engel | — | Seattle Mariners | Seattle Mariners signed free agent CF Adam Engel to a minor league contract. |
| May 24, 2023 | Trade | Jacob Nottingham | Seattle Mariners | San Francisco Giants | Seattle Mariners traded C Jacob Nottingham to San Francisco Giants. |
| May 22, 2023 | Signed as free agent | Marcus Walden | — | Seattle Mariners | Seattle Mariners signed free agent RHP Marcus Walden to a minor league contract. |
| May 22, 2023 | Signed as free agent | Jose Zerpa | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jose Zerpa to a minor league contract. |
| May 8, 2023 | Trade | Ethan Lindow | Philadelphia Phillies | Seattle Mariners | Philadelphia Phillies traded LHP Ethan Lindow to Seattle Mariners for cash. |
| May 4, 2023 | Released | Tommy La Stella | — | Seattle Mariners | Seattle Mariners released 2B Tommy La Stella. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Apr 18, 2023 | Signed as free agent | Konner Wade | — | Seattle Mariners | Seattle Mariners signed free agent RHP Konner Wade to a minor league contract. |
| Apr 14, 2023 | Signed as free agent | Rob Kaminsky | — | Seattle Mariners | Seattle Mariners signed free agent LHP Rob Kaminsky to a minor league contract. |
| Apr 13, 2023 | Signed as free agent | Eric Stout | — | Seattle Mariners | Seattle Mariners signed free agent LHP Eric Stout to a minor league contract. |
| Apr 6, 2023 | Signed as free agent | Braden Shipley | — | Seattle Mariners | Seattle Mariners signed free agent RHP Braden Shipley to a minor league contract. |
| Apr 5, 2023 | Signed as free agent | MJ Rookard | — | Seattle Mariners | Seattle Mariners signed free agent OF MJ Rookard to a minor league contract. |
| Apr 3, 2023 | Signed as free agent | César Hernández | — | Seattle Mariners | Seattle Mariners signed free agent 2B César Hernández to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Mar 31, 2023 | Trade | Unnamed | Seattle Mariners | Cincinnati Reds | Cincinnati Reds traded 2B Nick Solak to Seattle Mariners for cash. |
| Mar 30, 2023 | Signed as free agent | Nolan Blackwood | — | Seattle Mariners | Seattle Mariners signed free agent RHP Nolan Blackwood to a minor league contract. |
| Mar 27, 2023 | Signed as free agent | Nick Davila | — | Seattle Mariners | Seattle Mariners signed free agent RHP Nick Davila to a minor league contract. |
| Mar 26, 2023 | Released | Kole Calhoun | — | Seattle Mariners | Seattle Mariners released RF Kole Calhoun. |
| Mar 25, 2023 | Signed as free agent | Pat Valaika | — | Seattle Mariners | Seattle Mariners signed free agent SS Pat Valaika to a minor league contract. |
| Mar 20, 2023 | Signed as free agent | Ty Kelly | — | Seattle Mariners | Seattle Mariners signed free agent LF Ty Kelly to a minor league contract. |
| Mar 18, 2023 | Signed as free agent | Delino DeShields | — | Seattle Mariners | Seattle Mariners signed free agent CF Delino DeShields to a minor league contract. |
| Mar 16, 2023 | Signed as free agent | Jordan Cowan | — | Seattle Mariners | Seattle Mariners signed free agent 2B Jordan Cowan to a minor league contract. |
| Mar 15, 2023 | Signed as free agent | Johnny Adams | — | Seattle Mariners | Seattle Mariners signed free agent SS Johnny Adams to a minor league contract. |
| Mar 6, 2023 | Released | Nick Margevicius | — | Seattle Mariners | Seattle Mariners released LHP Nick Margevicius. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Feb 24, 2023 | Signed as free agent | Kole Calhoun | — | Seattle Mariners | Seattle Mariners signed free agent RF Kole Calhoun to a minor league contract and invited him to spring training. |
| Feb 18, 2023 | Signed as free agent | Kean Wong | — | Seattle Mariners | Seattle Mariners signed free agent 2B Kean Wong and to a minor league contract and invited him to spring training. |
| Feb 10, 2023 | Signed as free agent | Leonys Martin | — | Seattle Mariners | Seattle Mariners signed free agent CF Leonys Martin to a minor league contract. |
| Feb 9, 2023 | Signed as free agent | Carson Fulmer | — | Seattle Mariners | Seattle Mariners signed free agent RHP Carson Fulmer to a minor league contract. |
| Feb 8, 2023 | Signed as free agent | A.J. Puckett | — | Seattle Mariners | Seattle Mariners signed free agent RHP A.J. Puckett to a minor league contract. |
| Feb 6, 2023 | Signed as free agent | Shaddon Peavyhouse | — | Seattle Mariners | Seattle Mariners signed free agent RHP Shaddon Peavyhouse to a minor league contract. |
| Feb 3, 2023 | Signed as free agent | Kyle Tyler | — | Seattle Mariners | Seattle Mariners signed free agent RHP Kyle Tyler to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jan 31, 2023 | Signed as free agent | Francisco Pazos | — | Seattle Mariners | Seattle Mariners signed free agent RHP Francisco Pazos to a minor league contract. |
| Jan 30, 2023 | Signed as free agent | Taylor Williams | — | Seattle Mariners | Seattle Mariners signed free agent RHP Taylor Williams to a minor league contract and invited him to spring training. |
| Jan 30, 2023 | Signed as free agent | Leo Rivas | — | Seattle Mariners | Seattle Mariners signed free agent SS Leonardo Rivas to a minor league contract and invited him to spring training. |
| Jan 30, 2023 | Signed as free agent | Ian Clarkin | — | Seattle Mariners | Seattle Mariners signed free agent LHP Ian Clarkin to a minor league contract. |
| Jan 30, 2023 | Signed as free agent | Allan Saathoff | — | Seattle Mariners | Seattle Mariners signed free agent RHP Allan Saathoff to a minor league contract. |
| Jan 24, 2023 | Signed as free agent | Connor Prins | — | Seattle Mariners | Seattle Mariners signed free agent RHP Connor Prins to a minor league contract. |
| Jan 23, 2023 | Signed as free agent | Colin Moran | — | Seattle Mariners | Seattle Mariners signed free agent 3B Colin Moran to a minor league contract and invited him to spring training. |
| Jan 20, 2023 | Signed as free agent | Josh Morgan | — | Seattle Mariners | Seattle Mariners signed free agent 3B Josh Morgan to a minor league contract. |
| Jan 19, 2023 | Signed as free agent | Tommy La Stella | — | Seattle Mariners | Seattle Mariners signed free agent 2B Tommy La Stella. |
| Jan 18, 2023 | Signed as free agent | Jason Vosler | — | Seattle Mariners | Seattle Mariners signed free agent 3B Jason Vosler to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Delfry Carrasco | — | Seattle Mariners | Seattle Mariners signed free agent 2B Delfry Carrasco to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Kay Robles | — | Seattle Mariners | Seattle Mariners signed free agent OF Kay Robles to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Kelvin Alcantara | — | Seattle Mariners | Seattle Mariners signed free agent OF Kelvin Alcantara to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Kendal Meza | — | Seattle Mariners | Seattle Mariners signed free agent RHP Kendal Meza to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Sebastian De Andrade | — | Seattle Mariners | Seattle Mariners signed free agent C Sebastian De Andrade to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Ruddy Navarro | — | Seattle Mariners | Seattle Mariners signed free agent RHP Ruddy Navarro to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Felnin Celesten | — | Seattle Mariners | Seattle Mariners signed free agent SS Felnin Celesten to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Jose Romero | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jose Romero to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Gustavo Beltran | — | Seattle Mariners | Seattle Mariners signed free agent SS Gustavo Beltran to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Jean C. Gutierrez | — | Seattle Mariners | Seattle Mariners signed free agent OF Jean C. Gutierrez to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Dylan Wilson | — | Seattle Mariners | Seattle Mariners signed free agent RHP Dylan Wilson to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Alexander Garcia | — | Seattle Mariners | Seattle Mariners signed free agent SS Alexander Garcia to a minor league contract. |
| Jan 15, 2023 | Signed as free agent | Jeter Martinez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jeter Martinez to a minor league contract. |
| Jan 12, 2023 | Signed as free agent | AJ Pollock | — | Seattle Mariners | Seattle Mariners signed free agent CF AJ Pollock. |
| Jan 11, 2023 | Signed as free agent | Robbie Tenerowicz | — | Seattle Mariners | Seattle Mariners signed free agent 2B Robbie Tenerowicz to a minor league contract. |
| Jan 9, 2023 | Signed as free agent | Mike Ford | — | Seattle Mariners | Seattle Mariners signed free agent 1B Mike Ford to a minor league contract. |
| Jan 7, 2023 | Trade | Justin Topa | Milwaukee Brewers | Seattle Mariners | Milwaukee Brewers traded RHP Justin Topa to Seattle Mariners for RHP Joseph Hernandez. |
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.