​For the third time this season, the Cleveland Indians have placed left-handed reliever ​Andrew Miller on the disabled list. This time around Miller is going on the shelf (retroactive to Aug. 27) with an external impingement in his left shoulder.

Fellow left-hander Tyler Olson has been recalled from Triple-A Columbus.

In 10 appearances since coming off the shelf on Aug. 3, Miller has posted a 1.86 ERA with 10 strikeouts over 9.2 innings. Manager Terry Francona has been cautious with Miller and is monitoring his workload as he continues to build up arm strength, but this impingement certainly throws a wrench in things.

Miller's two initial stints on the disabled list had to deal with a left hamstring strain and then ​right knee inflammation. Those are certainly injuries you don't want to mess around with, but now it's a shoulder problem, which is vitally important to a pitcher.

In just 27 appearances, Miller has posted a 3.38 ERA with 33 strikeouts over 24 innings.