| Team |
Date |
Transaction |
 |
April 10, 2019 |
Chicago Cubs placed LHP Jon Lester on the 10-day injured list retroactive to April 9, 2019. Left hamstring strain. |
|
September 2, 2017 |
Chicago Cubs activated LHP Jon Lester from the 10-day injured list. |
|
August 18, 2017 |
Chicago Cubs placed LHP Jon Lester on the 10-day disabled list. Left lat tightness. |
|
December 15, 2014 |
Chicago Cubs signed free agent LHP Jon Lester. |
 |
October 30, 2014 |
LHP Jon Lester elected free agency. |
|
August 1, 2014 |
Oakland Athletics activated LHP Jon Lester. |
|
July 31, 2014 |
Boston Red Sox traded LHP Jon Lester, LF Jonny Gomes and cash to Oakland Athletics for LF Yoenis Cespedes and . |
 |
July 25, 2011 |
Boston Red Sox activated LHP Jon Lester from the 15-day disabled list. |
|
July 6, 2011 |
Boston Red Sox placed LHP Jon Lester on the 15-day disabled list. Strained Lower Left Lat Muscle |
