None. Cain will KO him within two rounds. Overeem is too slow and doesn't have the chin JDS does, quite the opposite actually.
At Cain's pace, Overeem has at most two rounds to finish the fight. At most. Should be fun to watch either way.
there is no pace that Cain can push that would have Overeem tired in 10 rounds let alone 5.
Cain is far too intelligent to even let Reem get his chance in the first couple minutes. I think Cain would force a clinch in which he tires Overeem out, then the takedown would come.
there is no pace that Cain can push that would have Overeem tired in 10 rounds let alone 5.