Arrieta (hamstring) will throw a simulated inning Monday, Jordan Bastian of MLB.com reports.

EDGE Analysis

Arrieta has been on the injured list since July 7 due to right hamstring tightness, but Monday's throwing session could help the team evaluate his progress in his recovery. A better timetable for the right-hander's return to game action could be established based on how he feels after the simulated inning.