ST. JOSEPH, Mo. (AP) — The Chiefs have spent all of training camp shuffling their offensive line, trying to use the competition to figure out their best five by the regular season.Perhaps injuries will help them settle things.The Chiefs lost left tackle Eric Fisher to a sprained ankle early in Monday’s practice, and it is unclear how long the former No. 1 overall draft pick will be out. Chiefs coach Andy Reid said he would undergo an MRI to determine the extent of the injury.Fisher was hurt just two days after offensive guard Jeff Allen sprained a ligament in his knee in the Chiefs preseason opener.