Anyone happen to have that one champion that, whenever they're on the field, you lose?

It doesn't matter if they're on your team, or the enemy team, your winrate against them and with them is abysmal.

For me, its . If Yi is on my team, he may pop off, and start wrecking people......but then our ADC, supp, and mid laner all go 0/6 before 20 minutes (not joking, just played this game). If he's on the enemy team, he easily gets fed, and completely wins the game on his own, despite our best efforts to shut him down.

I mean its bad enough, that I'm even considering banning him even if one of my teammates wants to play him, and I'm not the kind of person to do that.

So, anyone else have a situation like this?