#1 Baker Mayfield, quarterback
Baker Mayfield continues to do what no quarterback should be able to do against defences which allow literally no one except Baker Mayfield to do what Baker Mayfield has been able to do against them (say that 10 times fast). Mayfield was a Heisman Trophy contender in both the 2015 and 2016 seasons as well, but this is the season during which he looks poised to take that next step and finally win the sport's top award.
With a 71.2% pass completion percentage, Mayfield leads the country, and his 3,559 passing yards and 31 passing touchdowns, rank 2nd and 3rd, respectively. While he is not really considered a running quarterback, he hasn't shied away from the opportunity to get the job done on the ground with 231 rushing yards and five rushing touchdowns as well. Because of him, Oklahoma can beat anybody, and they may get the chance to do so with their second College Football Playoff appearance in the last three years on the horizon.