No Mundo would take Cleanse anyway. I play Mundo personally and with the way I build him, Yi's run from me 1v1. Pretty much everyone runs from me 1v1 and even 2v1. ><

you do realize that with items and everything else, yi is already gonna win, because of better items. mundo- heart of gold isnt upgraded, doran's shield isnt a real item, it is maybe a first item, but sold later, not bought mid-game, also no cdr, spirit visage is a pretty alright item for mundo. yi has an easy dps/crit build, plus a sword of occult, since you pre-destined yi to be the winner, sword of occult will dominate the game.
you do know that three points are wasted in mundo's mastery tree right? of course you, you planned for yi to win. but wait there's more. if mundo knew he was going against yi, he wouldnt take cleanse, wasted spell, wasted mastery, so a total of 4 masteries wasted, and defensive mastery is "meh," maybe 6 points wasted.
i dont know if you're trying to prove a point, but yi has lvl one runes.
your a dumbass, dont procreate

?