Official Site of the Cubs · Aug 18, 2017
Lester to DL, expected to return this season
Jon Lester leaves the game with left lat tightness in the top of the 2nd inningCHICAGO -- The Cubs placed left-hander Jon Lester on the 10-day disabled list with tightness in his left side and shoulder fatigue on Friday. The injury is not expected to be season-ending. Right-hander Justin Grimm also went on the DL with an infection in his right index finger.
In corresponding moves, the club called up lefty Rob Zastryzny and righty Felix Pena from Triple-A.
Lester had to leave Thursday's 13-10 loss to the Reds after throwing 46 pitches over 1 2/3 innings, because he had tightness in his left lat.