Aug. 27, 2015

Seattle Mariners traded Fernando Rodney to Chicago Cubs for cash.

July 31, 2015

Seattle Mariners traded RHP Mark Lowe to Toronto Blue Jays for LHP Rob Rasmussen, LHP Jacob Brentz and LHP Nick Wells.

July 31, 2015

Seattle Mariners traded LHP J.A. Happ to Pittsburgh Pirates for RHP Adrian Sampson.

July 31, 2015

Seattle Mariners traded LF Dustin Ackley to New York Yankees for RHP Jose Ramirez and LF Ramon Flores.

June 3, 2015

Arizona Diamondbacks traded RF Mark Trumbo and LHP Vidal Nuno to Seattle Mariners for C Welington Castillo, RHP Dominic Leone, RF Gabriel Guerrero and SS Jack Reinheimer.

May 19, 2015

Chicago Cubs traded C Welington Castillo to Seattle Mariners for RHP Yoervis Medina.

April 2, 2015

Chicago Cubs traded RHP Tony Zych to Seattle Mariners for a player to be named later.

March 31, 2015

Seattle Mariners traded RHP Erasmo Ramirez to Tampa Bay Rays for LHP Mike Montgomery.

Jan. 14, 2015

Chicago Cubs traded LHP Mike Kickham to Seattle Mariners for RHP Lars Huijer.

Dec. 30, 2014

Seattle Mariners traded RHP Brandon Maurer to San Diego Padres for LF Seth Smith.

Dec. 17, 2014

Chicago Cubs traded RF Justin Ruggiano to Seattle Mariners for RHP Matt Brazis.

Dec. 3, 2014

Seattle Mariners traded RF Michael Saunders to Toronto Blue Jays for LHP J.A. Happ.

Nov. 20, 2014

Seattle Mariners traded 2B Ty Kelly to St. Louis Cardinals for Sam Gaviglio.

July 31, 2014

San Diego Padres traded RF Chris Denorfia to Seattle Mariners for CF Abraham Almonte and RHP Stephen Kohlscheen.

July 31, 2014

Detroit Tigers traded LHP Drew Smyly and SS Willy Adames to Tampa Bay Rays; Tampa Bay Rays traded LHP David Price to Detroit Tigers; Seattle Mariners traded SS Nick Franklin to Tampa Bay Rays and Detroit Tigers traded Austin Jackson to Seattle Mariners.

July 24, 2014

Minnesota Twins traded 1B Kendrys Morales to Seattle Mariners for RHP Stephen Pryor.

June 11, 2014

Seattle Mariners traded C Manny Pina to Detroit Tigers for a player to be named later.

April 12, 2014

Seattle Mariners traded RHP Hector Noesi to Texas Rangers for a player to be named later.

Jan. 29, 2014

Seattle Mariners traded RF Carlos Peguero to Kansas City Royals for a player to be named later.

Dec. 13, 2013

Seattle Mariners traded RHP Carter Capps to Miami Marlins for RF Logan Morrison.

Sep. 11, 2013

Seattle Mariners traded SS Brendan Ryan to New York Yankees for cash.

Aug. 30, 2013

Baltimore Orioles traded LF Xavier Avery to Seattle Mariners for LF Michael Morse.

Aug. 1, 2013

Seattle Mariners traded 2B Robert Andino to Pittsburgh Pirates.

July 6, 2013

Seattle Mariners traded 1B Alex Liddi to Baltimore Orioles.

June 30, 2013

Seattle Mariners traded RF Eric Thames to Baltimore Orioles for 3B Ty Kelly.

June 9, 2013

Seattle Mariners traded 3B Vinnie Catricala to Oakland Athletics.

June 2, 2013

Seattle Mariners traded 3B Francisco Martinez to Detroit Tigers.

April 11, 2013

Colorado Rockies traded RHP Aaron Harang to Seattle Mariners for RHP Steven Hensley.

Feb. 20, 2013

Seattle Mariners traded 1B Mike Carp to Boston Red Sox.

Feb. 13, 2013

Seattle Mariners traded RHP Shawn Kelley to New York Yankees for CF Abraham Almonte.

Jan. 16, 2013

Washington Nationals traded LF Michael Morse to Seattle Mariners; Seattle Mariners traded C John Jaso to Oakland Athletics and Oakland Athletics traded RHP A.J. Cole and RHP Blake Treinen to Washington Nationals.

Dec. 19, 2012

Los Angeles Angels traded 1B Kendrys Morales to Seattle Mariners for LHP Jason Vargas.

Nov. 20, 2012

Baltimore Orioles traded 2B Robert Andino to Seattle Mariners for LF Trayvon Robinson.

July 31, 2012

Toronto Blue Jays traded RF Eric Thames to Seattle Mariners for RHP Steve Delabar.

July 31, 2012

Seattle Mariners traded RHP Brandon League to Los Angeles Dodgers for RHP Logan Bawcom and CF Leon Landry.

July 23, 2012

Seattle Mariners traded RF Ichiro Suzuki to New York Yankees for RHP D.J. Mitchell and RHP Danny Farquhar.

Jan. 23, 2012

New York Yankees traded C Jesus Montero and RHP Hector Noesi to Seattle Mariners for RHP Michael Pineda and RHP Jose Campos.

Nov. 27, 2011

Tampa Bay Rays traded C John Jaso to Seattle Mariners for RHP Josh Lueke.

Aug. 31, 2011

Seattle Mariners traded 2B Jack Wilson to Atlanta Braves.

Aug. 17, 2011

Detroit Tigers traded RHP Chance Ruffin to Seattle Mariners.

July 31, 2011

Seattle Mariners traded LHP Erik Bedard and RHP Josh Fields to Boston Red Sox for CF Trayvon Robinson and OF Chih-Hsien Chiang.

July 30, 2011

Seattle Mariners traded RHP David Pauley and RHP Doug Fister to for a player to be named later, RF Casper Wells, LHP Charlie Furbush and 3B Francisco Martinez.

March 2, 2011

Cleveland Indians traded LHP Aaron Laffey to Seattle Mariners for 2B Matt Lawson.

Dec. 21, 2010

Seattle Mariners traded C Rob Johnson to San Diego Padres.

Dec. 12, 2010

St. Louis Cardinals traded SS Brendan Ryan to Seattle Mariners for RHP Maikel Cleto.

Dec. 2, 2010

Seattle Mariners traded 3B Jose Lopez to Colorado Rockies for RHP Chaz Roe.

Aug. 4, 2010

Seattle Mariners traded 1B Mike Sweeney to Philadelphia Phillies.

July 9, 2010

Seattle Mariners traded LHP Cliff Lee and RHP Mark Lowe to Texas Rangers for RHP Blake Beavan, RHP Josh Lueke, 1B Justin Smoak and 2B Matt Lawson.

June 27, 2010

Cleveland Indians traded 1B Russell Branyan to Seattle Mariners for CF Ezequiel Carrera and SS Juan Diaz.

March 18, 2010

Seattle Mariners traded RHP Miguel Celestino to Boston Red Sox.

Jan. 7, 2010

Boston Red Sox traded 1B Casey Kotchman to Seattle Mariners for a player to be named later and LF Bill Hall.

Dec. 23, 2009

Toronto Blue Jays traded RHP Brandon League and RF Johermyn Chavez to Seattle Mariners for Brandon Morrow.

Dec. 18, 2009

Chicago Cubs traded RF Milton Bradley to Seattle Mariners for RHP Carlos Silva.

Dec. 16, 2009

Philadelphia Phillies traded LHP Cliff Lee to Seattle Mariners for RHP Phillippe Aumont, RHP J.C. Ramirez and CF Tyson Gillies.

Sep. 18, 2009

Seattle Mariners traded C Jamie Burke to Washington Nationals.

Aug. 19, 2009

Milwaukee Brewers traded Bill Hall to Seattle Mariners for RHP Ruben Flores.

July 31, 2009

Seattle Mariners traded LHP Jarrod Washburn to Detroit Tigers for LHP Mauricio Robles and LHP Luke French.

July 29, 2009

Seattle Mariners traded 1B Jeff Clement, SS Ronny Cedeno and RHP Nate Adcock to Pittsburgh Pirates for RHP Aaron Pribanic, RHP Brett Lorin, RHP Ian Snell and SS Jack Wilson.

July 29, 2009

Seattle Mariners traded RF Wladimir Balentien to Cincinnati Reds for RHP Robert Manuel.

July 11, 2009

Seattle Mariners traded RHP Justin Souza to Oakland Athletics for 3B Jack Hannahan.

July 10, 2009

Kansas City Royals traded RHP Dan Cortes and LHP Derrick Saito to Seattle Mariners for SS Yuniesky Betancourt.

June 11, 2009

San Diego Padres traded C Colt Morton to Seattle Mariners.

Jan. 28, 2009

Seattle Mariners traded INF Ronny Cedeno and LHP Garrett Olson to Chicago Cubs for RHP Aaron Heilman.

Jan. 20, 2009

Red Sox traded RHP David Aardsma to Seattle Mariners for LHP Fabian Williamson.

Dec. 10, 2008

New York Mets traded RHP Aaron Heilman, OF Endy Chavez, LHP Jason Vargas, INF Mike Carp, OF Ezequiel Carrera and RHP Maikel Cleto to Seattle Mariners for RHP J.J. Putz, RHP Sean Green and OF Jeremy Reed; Cleveland Indians traded OF Franklin Gutierrez to Seattle Mariners for INF Luis Valbuena; New York Mets traded RHP Joe Smith to Cleveland Indians.