Manager Joe Girardi said that Eflin (knee) threw a light bullpen session Monday, Scott Lauber of The Philadelphia Inquirer reports.

EDGE Analysis

Eflin last threw a bullpen July 25, but he did not come out of the session feeling well. His return to mound work is a positive step in the right direction, but the right-hander still remains without a concrete return timeline. With that in mind, Eflin could have an outside chance of rejoining the Phillies' rotation by the end of August, though a September activation appears more likely at this point.