100nl A9s

Villain is a tagg reg and he's pretty good. I expect him to fold/4 bet here alot more than flatting my 3bet.

Flop seems standard check behind I think. Then I am confused. Is he turning a pp into a bluff? Better ace is a possibility. The only flush hand he could possibly have is KQs imo.

Full Tilt Poker, $0.50/$1 NL Hold'em Cash Game, 5 Players
LeggoPoker.com - Hand History Converter

UTG: $44.45
CO: $109.10
Hero (BTN): $100
SB: $100
BB: $312.60

Pre-Flop: A:spade: 9:spade: dealt to Hero (BTN)
UTG folds, CO raises to $3.50, Hero raises to $11, 2 folds, CO calls $7.50

Flop: ($23.50) 8:spade: 5:heart: A:heart: (2 Players)
CO checks, Hero checks

Turn: ($23.50) A:diamond: (2 Players)
CO bets $16, Hero calls $16

River: ($55.50) 4:heart: (2 Players)
CO bets $31, Hero?

I'd probably call and make a note for future reference, i.e. if he has air he's willing to bluff 2 streets specially if a scare card falls, or if he has aj,aq,88,55, flushes, that hes willing to play these hands oop in a 3 bet pot.

I'd call. I also wouldn't 3 bet pre unless you had some squeeze maniacs in the blinds. I'd be much happier flatting A9s ip than 3 betting.

this is AJ AQ or a boat almost 100% of the time if he s decent
edit : if he s RLY good it can be slowplayed KK but that's probably a little too fancy

I'm with meeloche. I'd flat pre, I'd rather 3bet with A9o. I like the flop check behind and call-call is good.