Question: Baker Reagan Mayfield, is a college American football quarterback for the Oklahoma Sooners, after sitting out the 2014 season due to NCAA transfer rules, Mayfield won the starting quarterback job in 2015 over which incumbent starter, an American football quarterback for the Atlanta Falcons of the National Football League (NFL)?
Sentence (from "Trevor Knight"): Trevor Knight (born October 3, 1993) is an American football quarterback for the Atlanta Falcons of the National Football League (NFL).
Relevant evidence: Yes