The Chargers, who allowed no running back other than Melvin Gordon to touch the ball in their most recent game, moved to add speed to the unit Tuesday when they claimed former San Diego State running back Ronnie Hillman on waivers from the Vikings.
Hillman, 25, could be a backup option Sunday against the Houston Texans.
In five games with Minnesota, which acquired him after the Denver Broncos cut him late in the preaseason, Hillman rushed 18 times for 50 yards (2.8) and caught four passes for 43 yards (10.