The five-year veteran from Northern Illinois rushed for 208 yards Sunday, the second-highest single-game total in team history, and one touchdown in the Falcons' 31-27 win over St. Louis.
In all, he rushed for 1,699 yards, the second-most in the NFL, and scored a franchise-record 17 touchdowns (all rushing).
Other NFC honorees were Philadelphia end Chris Clemmons (defense) and Minnesota placekicker Ryan Longwell (special teams).
Clemons equaled a career-high with two sacks and returned a fumble 73 yards for a third quarter touchdown in a 44-6 rout of the Cowboys, giving the Eagles an NFC wild card berth and eliminating Dallas.
Longwell's 50-yard fourth quarter field goal, his second of the game, gave the Vikings the NFC North Division title with their 20-19 victory against the New York Giants.