As they proved yesterday, the Chargers’ backups are gamers. Second-string tailback Michael Turner runs strong and has good balance. He’s going to cash in and start for somebody next season. Quarterback Billy Volek is an experienced veteran with strong pre-snap recognition skills. He makes up for poor arm strength by making good decisions. Tight end Brandon Manumaleuna (that’s Manu-ma-lee-oon-a to me and you) is a good blocker but has hands of stone.