Chargers planning to go with “hot hand” at tailback

Chargers running back Ryan Mathews could end up staying healthier this year for one very important reason:  He could end up playing less. Via Alex Marvez of FOXSports.com, new Chargers coach Mike McCoy plans to use multiple running backs this season. “I’ve been raised with [Denver head coach] John Fox in this league,” McCoy said.…