Anthony Richardson exited the Indianapolis Colts' Week 2 game with a concussion. 

Richardson appeared to hit the back of his head on the turf early in the first quarter on a 15-yard touchdown run off the right side. 

Richardson rushed for touchdowns on both of the Colts' first two series in the game.

The Los Angeles Rams have placed wide receiver Cooper Kupp on injured reserve because of his lingering hamstring injury.

Kupp will miss at least four games while on injured reserve: trips to Seattle, Cincinnati and Indianapolis and home against the San Francisco 49ers.

The Indianapolis Colts will employ a committee approach at running back without Jonathan Taylor.

With Taylor on the physically unable to perform list, the Colts will turn to Zack Moss, Deon Jackson and rookie Evan Hull.

"I think it's running back-by-committee," Shane Steichen said. "Whoever's got the hot hand, let 'em ride a little bit."