Red Sox left-hander James Paxton was placed on the 15-day injured list with right knee inflammation, a move manager Alex Cora said will end his season.

"It's been barking at him," Cora said Sunday at Fenway Park while the Red Sox were preparing for their series finale against the American League East-leading Baltimore Orioles. "We looked at pushing him back. I don't think it makes sense to push him. He's been through so much in his career."