Looking at oklahoma's starting pitchers they, like us have thrown their three primary starters. Their friday guy threw 79 pitches versus our guy threw 84. The sat guy threw 110+ so he is unavailable as is yesterday's dude who was essentially throwing BP. The next guy up with starting experience is Kyle Tyler who threw 40 pitches in relief on Friday and gave up 2 runs on 3 hits. That is who I would guess starts followed by the committee approach.
For us I'd consider starting James for an inning then go committee from there with Pilk in middle relief.