Clinton Portis has scored eight TDs this season.

The last time the Broncos and Chargers played, Denver running back Clinton Portis burned the Chargers for 102 yards as Denver easily beat San Diego 26-9. When the two teams meet Sunday (4:05 ET) in a game with huge playoff implications, one of the key matchups will be Portis vs. the Chargers' run defense. In his weekly First ... And 10, ESPN.com's John Clayton says that the Chargers need a big game from their own running attack with LaDainian Tomlinson to be successful.