Kris Rhim details the latest on the Chargers' backup running back competition after the team added Nyheim Hines. (0:53)Open Extended ReactionsRunning back Nyheim Hines, who hasn't played in the NFL the past two seasons because of a knee injury, reached agreement on a contract with the Los Angeles Chargers, a source told ESPN's Adam Schefter. Hines reached a deal after trying out for the team Monday. Hines gives the Chargers an experienced running back who is accomplished on special teams to compete with backups Kimani Vidal, Hassan Haskins, and Jaret Patterson. Undrafted Raheim Sanders has missed the past three days of practice, and Hines' signing makes the roster an uphill battle for the rookie.