Rams' Kupp carted off after horse-collar tackle

Los Angeles Rams wide receiver Cooper Kupp left Sunday's game against the Denver Broncos with a knee injury and is questionable to return.

Broncos safety Darian Stewart dragged Kupp down by his collar after an end-around run. The receiver stayed down on the sidelines after his leg bent awkwardly.

Kupp suffered a concussion in Week 5 against the Seattle Seahawks. He was cleared to play on Saturday.

The 25-year-old was carted off the field and couldn't put any weight on his leg after heading into the locker room.

Kupp has been instrumental to the Rams' offense, recording 30 catches for 438 yards and five touchdowns.

Josh Reynolds will see increased snaps in Kupp's absence.