Newton, the number one overall pick out of Auburn, passed for 1,012 yards, the most ever by a player in his first three games. He also had four touchdowns and two rushing scores for the 1-2 Panthers.
He threw for 422 yards in his NFL debut, setting a record for the most yards by a player in his debut. Newton followed that with an NFL single-game rookie record 432 yards, surpassing the mark set by the Lions' Matthew Stafford in 2009.
Newton is the first rookie to win a monthly honor for Carolina since Matt Moore in 2007, and the third Panther overall.
Kerrigan, the 16th overall pick out of Purdue, recorded 12 tackles, two sacks, a forced fumble and returned an interception for a touchdown for the 2-1 Redskins.
He is the first Redskins rookie to win the honor since safety Chris Horton in 2008, and the fourth in team history.