New Orleans  -- Bruce Arians, who guided the Indianapolis Colts into the playoffs, won the NFL Coach of the Year, in voting conducted by the Associated Press.

Arians, now the head coach of the Arizona Cardinals, took over the head coaching duties when Chuck Pagano was forced to step aside to battle leukemia.

Arians, who started the season as offensive coordinator and had a job to tutor rookie quarterback Andrew Luck, guided the Colts to a 9-3 record during his time at the helm. Indianapolis finished 11-5 and gained a playoff berth.

This is the first time the coaching award went to an individual who didn't serve full-time as a head coach.

Arians received 36 1/2 votes, while Pagano was second with 5 1/2. Seattle's Pete Carroll (5) was third and Minnesota's Leslie Frazier (3) was fourth in the voting.

Washington Redskins quarterback Robert Griffin III was named the offensive Rookie of the Year. 

Griffin received 29 votes to easily outdistance Colts QB Andrew Luck (11) for the honor. Seattle Seahawks quarterback Russell Wilson (10) was third in the voting.

The Baylor standout connected on 258-of-393 passes for 3,200 yards, 20 touchdowns and tossed just five interceptions while pacing the Redskins to a 10-6 record and their first NFC East title since 1999. He also ran for a league rookie-record 815 yards and had seven rushing TDs.

He underwent surgery last month to repair both the lateral collateral and anterior cruciate ligaments in his right knee. Griffin suffered the injury in a playoff loss to Seattle.