I doubt you'll see a change, but I'd say Pollo. We need someone who can eat up some innings and keep the load off the bullpen. I feel like he's the safest bet right now out E. Mitchell, Woodruff, and Cox.
I'll vote for Gentry but I would be OK with trying Pollo as well. E. Mitchell has lost his right to start SEC games until others get an opportunity to see if they can do better.
Polo has experience starting. It's a no brainer. Holder has two pitches. Into the third inning his fast ball would be upper 80's. if holder pitches two games in a weekend his velocity drops several mph. A tired holder equals cox. An average flat fastball.