Ward has been the 49ers' top rated cornerback this season per advanced statistics site Pro Football Focus. He was also the 49ers' highest rated defensive back, which includes safeties, last season.
Tight end Vance McDonald also left the game with a hip injury and was reported as QUESTIONABLE to return.
UPDATE:
Following the game, head coach Chip Kelly stated that he believes that Ward's injury was to his muscle and not something more serious.