won't be no submission attempts, becuase nog or mir can't take brock down..
Brock will do Nog a favor and take him down (not to rule Mir out). Admittedly it's hard to sub someone with great wrestling skills, who's also quite explosive with their GNP off your back, but Nog certainly has the talent to make it happen.
There's also the possibility of a sweep if they're on the ground, or a trip or some such if they're not (Nog's been training Judo for most of his life). If it stays on the feet Nogueira has some underestimated boxing talent imo, even if Lesnar hits harder.
Very very tough fight for Nogueira but I think he can pull it off.