Jay did not play in the Cards' 3-2 loss on Monday and plans to begin working his way back into the lineup Tuesday. He suffered the injury Thursday when he jammed his shoulder into the outfield wall in St. Louis.
Jay -- who underwent the MRI early Monday before meeting the team in Chicago -- said how he feels day to day will determine how quickly he returns. Jay said now that he knows everything is structurally sound, he'll look at the injury as a bruise and "just deal with it."
"[Making sure there was no added damage] was the biggest thing with the MRI, and that's why I was happy with the results," Jay said. "I can't mess it up any more so I can continue to push it, which is what I wanted to hear."
Both Jay and Matheny said there is no timetable for the outfielder's return.
"We'll wait and see what we hear tomorrow," Matheny said. "Just try not to get too far ahead in the expectations."