The pair of top pound for pound fighters could have had a superfight over the summer that now appears dead in the water

Topuria vacated the UFC’s 145lb title to challenge Makhachev at 155lb, only for the latter to relinquish his belt and move up to 170lb

If Ilia Topuria and Islam Makhachev continue their back-and-forth in the wake of Topuria's move to lightweight to chase Makhachev's title – and Makhachev's subsequent move to welterweight to go after the title there,