I really don't want to see Kerevi at 13. Cheika played him there and he was all at sea in defence, and the same happened last night. Keep him at 12! IMO the choice for 13 lies between Foketi, Flook and Perese, or perhaps Petaia if he's fit, but I'd rather seem him off the bench first start. Although I'm a Tahs fan, I think Perese's defence isn't up to test standard (he tackles fine, but he gets out of position a lot), so either Flook, who looks very solid at Super level but hasn't been tested at this level, or Foketi, who did play mostly 12 this year but has played a lot of 13, and may possibly be a bit stronger in attack than Flook.