Completely lost here. I´ve played with villain before and seen him play his flush draws fast.



Stack sizes:
UTG: $15
UTG+1: $29.70
MP1: $23.75
MP2: $139.35
MP3: $12.45
CO: $39.70
Hero: $24.50
SB: $14.65
BB: $9.45

Pre-flop: (9 players) Hero is Button with
UTG raises to $0.75, UTG+1 folds, MP1 calls, MP2 folds, MP3 calls, CO calls, Hero calls, SB folds, BB calls.

Flop: ($4.6, 6 players)
BB checks, UTG checks, MP1 checks, MP3 checks, CO checks, Hero bets $4.4, 4 folds, CO calls.

Turn: ($13.4, 2 players)
CO checks, Hero bets $7.75, CO calls.

River: ($28.9, 2 players)
CO is all-in $26.8, Hero folds.
Uncalled bets: $26.8 returned to CO.

Results:
Final pot: $28.9

A quick example of a hand featuring a river call down with "not very much":

Cryptologic
Pot Limit Omaha Ring game
Blinds: $1/$2
10 players


Pre-flop: (10 players) HERO is MP3 with
UTG calls, 4 folds, HERO calls, CO (poster) checks, 2 folds, 2 folds, BB (poster) checks.

Flop: ($9, 4 players)
BB checks, UTG checks, HERO bets $9, CO calls, 2 folds.

Turn: ($27, 2 players)
HERO checks, CO checks.

River: ($27, 2 players)
HERO checks, CO bets $27, HERO calls.

Results:
Final pot: $81

Thinking here is straightforward - on flop when he calls the most likely hands are some sort of straight draw or a nut flush draw (villain wasn't too bad so is unlikely to be calling with absolutely nothing). On the turn, 9T is unlikely as I can't see many people chasing that straight then checking it with a flush draw on board. River is a total blank and I'm checking to him - if he has, say, a weasly two pair he'd probably check it down as I'm unlikely to call with a weaker hand. There's no straight likely, no flush and there's no reason to believe a K has hit him (A would be different as he possibly has a nut flush draw). More often than not I think most folks would check down AKxx here as they'll win if I was just on a draw but probably won't force out many better hands.

Only need to be right 35% of the time to start turning a profit, so here it looks a fair call. He hasn't told a convincing story and so (even though it's a good bluff that would force me out with a variety of winning hands) with as little as one pair of jacks I can take a look at his hand. HH converter didn't seem to work perfectly - anyhow, he had some low wrappy thing with a low flush draw and my pair of jacks won the pot.