The veteran running back's injury history is well known. He had also been dealing with a hamstring injury during the week but was a full participant in Friday's practice.
After the game, Dolphins coach Adam Gase said the training staff told him Foster wasn't going to be able to re-enter the game as soon as the injury happened.
Here's the other injuries we are tracking for Week 2's early games:
NFL Network's Mike Garafolo reported after the game that Garoppolo suffered a sprained AC joint in his throwing shoulder, according to someone informed of the results of exams performed at the hospital today. Garoppolo's chances of playing Thursday against the Texans are slim, per Garafolo, but the Patriots are hopeful he can return Week 4.
- Star pass rusher DeMarcus Ware suffered an ulna fracture near his elbow, coach Gary Kubiak revealed after the game. Ware will undergo further evaluation on Monday after suffering the injury while trying to tackle Andrew Luck on a third-quarter scramble. It's not clear yet if Ware can play through the injury.
- Browns quarterback Josh McCown went to the locker room with a left shoulder injury after taking a shot in the first quarter. He later came back to the game without missing a snap. The Browns blew a 20-2 lead and lost 25-20 to Baltimore. Pass rusher Carl Nassib left with a hand injury and didn't return.