Gates' status for the game had been uncertain. He missed three practices during the week with what he said was general soreness.
Tomlinson had 12 carries for 28 yards in the Chargers' first two preseason games. A team spokesman said Tomlinson has no reported injury.
Tomlinson and Gates were in uniform and participated in pregame warmups. Darren Sproles started at running back instead of Tomlinson. Brandon Manumaleuna started at tight end in place of Gates.
Copyright 2009 by The Associated Press