In a heads up match on PS, I had a 2940 to 60 chip lead. For him to beat me he'd have to double up 5 times and then win another all in for the knock out. So that's what he did, 6 all in preflops and won them all. To put this into prospective, even if i was a 4-1 dog every time, I'd still have a 74 percent chance of winning. However, I had the best hand 4 of the times, I had the over cards to an underpair once, and i was dominated the other. Also, The two hands I was behind, I took the lead after the flop. Anyway, I did the math and he had a 1.2 percent chance for all of those hands to win. Luckily this was lower than the normal stakes I play so my laptop didn't fly across the room and I can still use it.
Sorry for the stupid post, I'm sure this happens to everyone sometime but it's the first time it happened to me so I had to let the 2 people that go to this part of the forum know.