Texas A&M quarterback Johnny Manziel enters this week among the top three candidates to win Heisman Trophy in 2013, but he's not the lock. Here are the most recent top five contenders for the Heisman:

Coming in at No. 5 is South Carolina running back Mike Davis, who had 15 carries and 125 yards in the Gamecocks' win over Mississippi State on Saturday. Davis had a couple of spectacular catches in the game as well.

At No.4 is Baylor Bears standout Lache Seastrunk who has 96 carries and 869 yards thus far this season. Seastrunk is definitely a surprise candidate who came out of nowhere.

Manziel is No.3 on the Heisman hit list and he has to have great games over the last two weeks of season, and a win against LSU would help his chances.

Jameis Winston's sub-par performance on Saturday against Miami could hurt the Florida State quarterback chances as he threw a couple picks in the game, but the Seminoles remained ranked No.2 in the country after posting yet another dominating win.

Quarterback Marcus Mariotta of the Oregon Ducks remains the favorite as of now with 20 touchdown passes and no interceptions.