The St Louis Rams have signed Brady Quinn after starting quarterback Sam Bradford was ruled out for the rest of the season with a knee injury.

The former first-round Draft pick was released by the New York Jets on Monday, before working out with the NFC West side.

Kellen Clemens, who has been Bradford's backup for the last two season, will start against the Seattle Seahawks on Monday.

The Rams currently sit third in their division with a 3-4 record in 2013.