The bumps and bruises that go along with training camp continued to mount for the Winnipeg Blue Bombers Thursday morning.
Wide receiver Chris Matthews, the CFL rookie of the year in 2012, left practice early at Investors Group Field with what head coach Tim Burke described as back spasms.
"They took him into the training room. I don't know if he'll be out there (for second practice) this afternoon or not," said Burke.
Burke didn't seem overly concerned with Matthews' status, joking "it's not a life-threatening injury by any stretch of the imagination."
Matthews wasn't the only new addition to sick bay, either. Linebacker Henoc Muamba (hamstring), offensive lineman Mark DeWit (back) and wide receiver Isaac Anderson (back, knees) all sat out practice on Thursday.
Burke said all three men are sore and described their situations as day-to-day.
Also on Thursday, Burke said he reviewed film of the two fights that broke out during practice on Wednesday and could not single out anyone for supplemental discipline.
Burke said he told players on Wednesday that he wanted to see no more fighting and -- if there is -- he expects defensive players to pull defensive players off the pile and offensive players to do the same for offensive combatants, to avoid escalations like he saw on Wednesday.
There were no skirmishes during practice on Thursday, which Burke wondered might have had something to do with the punishment drill he made players run on Wednesday.
"Maybe those up-downs helped," said Burke.
The Bombers practice again at 4:15 p.m.