Arsenal boss Arsene Wenger revealed Wojciech Szczesny has played through the pain barrier to help them finish third.
The Pole was again between the posts for Sunday's crucial win over West Bromwich Albion.
Wenger told arsenal.com: "Szczesny has played injured in the last five weeks with a shoulder problem. He gets injected on the day of a game and plays, you cannot maintain your level like that forever. We just decided to do it because there was not long to go. If it was in the middle of the season we would have rested him. "