What happened to David Montgomery? Injury update as Texans RB ruled out vs Titans

Houston Texans running back David Montgomery has been ruled out against the Titans on Sunday game. Montgomery has been downgraded to out with a groin injury.The injury could also affect Houston's running game in the coming weeks, depending on how long Montgomery takes to recover.What happened before he leftAs per ESPN, Montgomery got hurt early in the second quarter. His last carry came on a second-and-5 at the start of that quarter. Before he left the game, he had 11 yards on five carries.As per CBS, Montgomery was seen walking slowly to the locker room.