Vikings coach Brad Childress believes that Adrian Peterson is a better running back than LaDainian Tomlinson. Tomlinson recently labeled himself as the NFL's best running back. "LaDainian is a hell of a back and he's entitled to his opinion," Childress told NFL.com on Wednesday. "I'm going to tell you, my guy is the best football player in the National Football League and he's the best running back in the National Football League, and I believe that." Peterson is the reigning NFL rushing champion and also holds the single-game record for rushing yards (296). Tomlinson had been considered the best runner in the league for many years prior to Peterson's arrival. "The difference with me is you can put me out on that field and there will be nothing I can't do. I won't have to come off the field. Adrian has to come off sometimes on third down. Running routes, he's still not there yet. Great downhill runner, powerful, fast, all that stuff. ... But anything on that field you want me to do -- throw it, block -- I can do it. That's what I pride myself on is not having any weaknesses. And that's what makes me the best back," Tomlinson told the Los Angeles Times earlier this week.