Villain was very tight/passive and was folding a lot preflop but capable of making a play. Earlier in the match he check min raised the river with A high and I called with 2nd pair. He also folded to a few 3bets preflop. I probably could of 3bet here but I decided to call. Villain wasn't betting a lot of flops either and he hasn't been cbetting in obvious spots like A high boards with K high. I've also seen him make 2nd pair on the river and check it back after it's been checked through on the flop and turn, so that tells me he can't value bet or doesn't have a good understanding of value betting. I think the flop and turn is pretty standard but on the river when he bets pot I suspect his range is polarized to either nuts or air; more precisely a Q or something like A high. Also his bet size is odd as he pots it and only has a little behind.Full Tilt Poker Game #27196035286: $2 + $0.15 Heads Up Sit & Go (211330614), Table 1 - 25/50 - No Limit Hold'em - 21:59:47 ET - 2011/01/11Seat 1: pardalQ3 (1,055)Seat 2: french army_lol (1,945)pardalQ3 posts the small blind of 25french army_lol posts the big blind of 50The button is in seat #1*** HOLE CARDS ***Dealt to french army_lol [9h Th]pardalQ3 raises to 100french army_lol calls 50*** FLOP *** [5s 9c Jh]french army_lol has 15 seconds left to actfrench army_lol checkspardalQ3 bets 200french army_lol calls 200*** TURN *** [5s 9c Jh] [2d]french army_lol checkspardalQ3 checks*** RIVER *** [5s 9c Jh 2d] [Qc]french army_lol has 15 seconds left to actfrench army_lol checkspardalQ3 bets 600french army_lol has 15 seconds left to actfrench army_lol has requested TIMEfrench army_lol calls 600