What history tells us about this season ' s four leading contenders -- and what each has to do to complete his quest .
Tom Brady , Derek Carr , Ezekiel Elliott , and Matt Ryan are the leading MVP contenders in 2016 .
What history tells us about this season ' s four leading contenders -- and what each has to do to complete Matt Ryan 's quest .
Tom Brady , Derek Carr , Ezekiel Elliott , and Matt Ryan are the leading MVP contenders in 2016 .