The Chargers announced it was an Achilles injury for Oliver and he won't return to the game. NFL Media Insider Ian Rapoport reports, via a source informed, the running back tore his Achilles and will miss the season.
Here's some other injury news from Sunday's games:
"We're going to be without Pharoh Cooper for a few weeks with a shoulder injury. I don't know how long, but it looks like he'll probably miss the opener, and we'll just see how quickly he can come back from that."