Garrett Richards suffered a left knee patellar injury in Wednesday's game.
Richards was running to cover first base when his left knee gave out. He had to be placed on a stretcher and carted off the field. While the Angels haven't given any idea as to his timetable, the right-hander is likely done for the year.
Everth Cabrera (hamstring) will rejoin the Padres on Thursday to begin baseball activities.
It will be the first work for Cabrera since hitting the disabled list with a left hamstring strain last week. It's still unclear how long he'll be out, as this is the second time he's been sidelined by the same hamstring strain this season. Alexi Amarista continues to start at shortstop in his absence.
Andrew Cashner (shoulder) will be activated from the disabled list prior to Saturday's start against the Diamondbacks.
The start will be Cashner's first since June 18 as he recovers from right shoulder soreness. His final rehab start was Monday, putting him on regular rest for the start in Arizona. When he's pitched he's been very good, posting a 2.36 ERA through 12 starts before the injury.
Dan Haren's next scheduled start was moved up to Friday to give Zack Greinke a few extra days off.
Haren was originally scheduled to start Saturday, with Greinke going Thursday and Clayton Kershaw pitching Friday, but some elbow tenderness caused the Dodgers to reshuffle their rotation. Kershaw will instead pitch the series finale against the Padres on Thursday, and Haren will lead off the Mets series on Friday. Haren last started on Sunday, so he will be on regular rest for the Friday tilt.
Garrett Richards left Wednesday's start against the Red Sox with a potentially serious right knee injury.
Richards was covering first base when his knee buckled, and he remained on the ground for several minutes. He was eventually carted off the field, an ominous sign. Richards had allowed five hits and two runs in his 1 2/3 innings of work before exiting. The Angels should update his status soon, but it would be a devastating blow if he's lost for a substantial period of time.