He might have thought your flop bet was small (1/3 pot), and decided you didn't have an ace (i.e. just continuation betting KK or maybe even QQ). You still had some money behind that might have made you fold to an all-in, if that were the case, thinking he had AK...
I would imagine he was only interested in making you fold.
As for his pre-flop actions, I have no clue. Maybe player 4 folds to 3-bets so often, he can take advantage, and thinks you know this as well? Nah, I think zeroster has the better explanation...
Joined: Mar '11
Location: United Kingdom
Age: 55 (M)
Posts: 7371
I dont think you did anything wrong except playing against a complete donk. You four bet correctly and this idiot still called. You hit huge on the flop and bet it accordingly and he still calls hoping to hit a gutshot. Crazy
Joined: Aug '10
Location: Germany
Age: 52 (M)
Posts: 2219
It is really a problem in the lower levels or freeroll games. Some player play every hand without motivation, but normally after the first Levels in tourneys the donks are eliminated and than you can play more hands. In this case it can be happened, that your opponent are frustrated after a suckout before?
I feel with you, you did everything right. These donks get time from time lucky, but most times they almost give you their stacks, continue playing and next time (hopefully) your 90% equity will hold. I play microstakes cash games and SNGs and experience this bull***t everyday as well, but overall i take money from these players, because the math is on my side.
Joined: May '13
Location: United Kingdom
Age: 37 (M)
Posts: 2219
Another all in gutshot hope and hit again. Very unlucky that he hit it as you would always be favourite in that position. Then again he might had enough bankroll so idiot plays like that would mean nothing to him.