Miguel Montero finished 2-for-4 with a homer and two runs scored in Tuesday's loss to the Blue Jays.
Diamondbacks activated C Miguel Montero from the 15-day disabled list.
Miguel Montero (back) could return from the disabled list Monday.
Miguel Montero (back) was scheduled to catch in a rehab game with the Diamondbacks' Arizona League club Monday.
Miguel Montero (back) is on track to begin a rehab assignment by the end of the week.
Miguel Montero (back) is expected to resume a hitting program Saturday.
Miguel Montero received an epidural for his ailing lower back last Friday.
Diamondbacks placed C Miguel Montero on the 15-day disabled list, retroactive to July 29, with a lower back strain.
Miguel Montero (back) is in the Diamondbacks' starting lineup on Saturday against the Padres.
Miguel Montero (back) is expected to return to the starting lineup Saturday.
Miguel Montero (back) is out of the Diamondbacks' starting lineup again Friday against the Padres.
An MRI on Miguel Montero's back showed only inflammation.
Miguel Montero will visit the doctor Wednesday after feeling slight pain in his back during batting practice prior to Tuesday's game.
Miguel Montero is not in the Diamondbacks' lineup for the second straight day Wednesday.