City News Service says Paul Diamond began choking a bit while eating Wednesday.
Oregon guard Mark Asper performed the Heimlich manoeuvre on Diamond, helping him cough the meat up.
Diamond says he was breathing throughout and not in too much distress, describing it as "not a big deal."
Diamond's son Tom is an Oregon senior.
The Beef Bowl traditionally brings the teams to the restaurant on separate nights for a dinner before the game.
Oregon's opponent, Wisconsin, visits Lawrys Thursday.