Actually, that's a big loss for the whorns. Lewis is their third leading scorer with a 10.3 average. He is also the only player besides Papapetrou who is shooting better than 30% from three.
That's not to suggest that tonight's game will be easy. OU lost Hield and UT got Kabongo back since their last meeting. Games on the road in conference are always tough, and UT is desperate to salvage what is left of their season with a win over a hated rival.