Chargers promote offensive lineman with Rich Ohrnberger ailing

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The Chargers have started three different players at center this year and it looks like they’ll be making it four on Sunday.

Rich Ohrnberger is listed as questionable with ankle and back issues and the team made a roster move to shore up the offensive line on Saturday. Ryan Miller was promoted from the practice squad and Michael Gehlken of U-T San Diego reports that rookie Chris Watt is expected to make his first start at center against the Rams with Ohrnberger landing on the inactive list.

Miller was a 2012 fifth-round pick of the Browns and saw limited playing time in Cleveland as a rookie. He suffered a concussion in training camp in 2013 that required him to be taken off the field in an ambulance and missed the entire season on injured reserve. He spent time with the Broncos this summer before finally landing on the San Diego practice squad.

Cornerback Richard Crawford was released to make room for Miller.