''I understand that the procedure went fine,'' said Oakland head coach Bill Callahan. ''It was nothing major. They just had to go in and clean some things out.''
Collins will miss at least the Raiders first two regular season games but will benefit from Oakland having a bye in the third week. That will give the fifth-year offensive lineman an extra week to heal in anticipation of returning for the Sept. 29 home game against Tennessee.
Collins' injury forced Oakland to move Frank Middleton from left guard to right guard and to insert former first-round pick Matt Stinchcomb into the lineup at left guard. Stinchcomb is still a work in progress at guard, and with left tackle Barry Sims having a sub-par preseason, the left side of the Raiders line will be worth keeping a close eye on.