January 18, 2012

Mariners  sign Oliver Perez

January 23, 2012

Michael Pineda traded from Mariners  to Yankees 

June 13, 2012

Mariners  sign Dominic Leone

Mariners  sign Patrick Kivlehan

Mariners  sign Tim Lopes

Mariners  sign Chris Taylor

June 14, 2012

Mariners  sign Edwin Diaz

July 02, 2012

Mariners  sign Mike Zunino

July 04, 2012

Mariners  sign Pablo Lopez

November 03, 2012

Oliver Perez became a free agent

Mariners  sign Oliver Perez as a free agent

December 06, 2012

Mariners  sign Luis Liberato