The move came after Cooper was unavailable for the third consecutive game because of lingering discomfort. The Blue Jays were hoping to be patient with him, but with only two healthy bodies on the bench the club could only afford to wait for so long.
The decision to deactivate Cooper meant Adam Lind was reinstated from the DL a little earlier than previously anticipated. It was a move that wasn't announced until after Toronto's 8-2 loss to the Orioles on Saturday night, but something manager John Farrell saw coming earlier in the day.
"We're getting closer to it, and we'll monitor David throughout the course of the night and how he responds to treatment," Farrell said prior to the game. "The possibility of a DL is getting stronger by the hour.
"We have three guys on the bench, and there's two that are eligible because of David's situation and that's almost unfair to the rest of the guys in uniform, if a situation in a game arises. We need a full complement of 25 guys healthy, on a roster, we're moving closer to returning Adam if there's no improvement with David."
Lind made his third appearance for Double-A New Hampshire on Saturday night. He went 2-for-2 with a solo homer and a walk, while taking on defensive responsibilities for the first time since being placed on the DL July 26.
The 29-year-old Lind is hitting .227 with eight home runs and 27 RBIs in 58 games this season.