Charles and Rivers advance to Sweet 16

On march Jamaal Charles and Philip Rivers.

The Kansas City Chiefs' running back and San Diego Chargers’ quarterback won their first-round matchups against other AFC West talent in ESPN.com’s SportsNation vote that will result in the winner being put on the cover of “Madden 12” video game.

Charles beat Denver quarterback Tim Tebow, 64 percent to 36 percent. Rivers beat Oakland running back Darren McFadden, 67 percent 33 percent.

Charles, the No. 6 seed on his side of the bracket, faces No. 3 seed, Jacksonville running back Maurice Jones-Drew. Rivers, seeded No. 1 on his side of the bracket, faces Minnesota running back Adrian Peterson.

Charles made it clear in an ESPN.com chat Monday that he is out to win the vote. Second-round voting goes through Sunday.