Ranking the Heisman favorites

Oregon quarterback Marcus Mariota has a total QBR of 97.4 through three games this season. Jesse Beals/ Icon SMI

We're four weeks into the season and so far not much has changed in the Heisman race. Aside from Ohio State quarterback Braxton Miller falling out because of an injury, the front-runners have met expectations and few dark horses have managed to fight their way into the conversation.

But that doesn't mean we haven't learned anything about the Heisman race.

Despite the fact that the majority of the candidates still boast perfect records, by looking at the upcoming schedule, each candidate's expected statistical output and historical trends in the voting, we can begin to see the true favorites emerge.

Here is the Heisman Predictor's ranking of the nine most likely candidates to win the Heisman Trophy in 2013.

The front-runners

1. Marcus Mariota, QB, Oregon Ducks

To piece together the perfect Heisman résumé, a candidate needs three main components: team success (the Ducks are ranked No. 2), impressive individual statistics (Mariota has 11 touchdowns through three games) and a Heisman-worthy performance against another elite team (Oregon travels to No. 5 Stanford on Nov. 7).