This player was nit until the moment 7/7 status with only 50 hands played with him. I think I should've bet bigger on flop, but on the river is it a fold or a call ?

Poker Stars $0.91+$0.09 No Limit Hold'em Tournament - t40/t80 Blinds + t10 - 8 players
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BTN: t1470 M = 7.35
SB: t1564 M = 7.82
BB: t1800 M = 9
UTG: t1213 M = 6.07
UTG+1: t2980 M = 14.90
MP1: t2312 M = 11.56
Hero (MP2): t2482 M = 12.41
CO: t2467 M = 12.34

Pre Flop: (t200) Hero is MP2 with J K
3 folds, Hero raises to t199, 3 folds, BB calls t119

Flop: (t518) 5 4 J (2 players)
BB checks, Hero bets t253, BB calls t253

Turn: (t1024) 3 (2 players)
BB checks, Hero checks

River: (t1024) J (2 players)
BB bets t512

I'd call this 1/2 pot click bet. You have a good kicker.

Yeah, definitely call - you induced this by checking behind turn.

The stats you have are off a small sample - also he's yet to flat pre-flop until this hand. Preflop tightness is not the same as postflop tightness. You can beat other jacks and big pairs that probably assume they're good now and don't really have a value target but are hoping you'll hero with some kind of middle pair or A high. If he's really playing cca 7% then he doesn't have lots of spades. I also think a flush either check-raised turn or bets bigger now - you certainly might see AJ or A2 play this sizing and of course these players can show up with anything, so I'm not saying you win every time here. You definitely win 25% of the time though. I would even consider raising to get value from worse jacks but probably decide against it.

Also if you aren't calling with this then what are you calling with? Slowplayed flushes only? If you really don't want to call with anything you get here with after you c-bet pretty much everything on the flop then check back turn - then that shows why villain at least should have a lot of bluffs.

nooo, just NO

i would bet/f 1/2 pot ott. BB's defending range should be way wider then your opening range and I would bet turn for value/protection. Some of his flush draws he probably x/r otf as he does with his sets. Bet turn and check back river seems like a play.

As played defo calling this sizing. (but there is more value and its easier to play ur range when you bet turn vs wide ranges in a spot where you have a range advantage)

I called hahaha . I'm thinking to start bet the turn always even when the flush complete because I always cbet my flush draws and when I hit I bet turn again so if I don't bet turn it is obvious my hand. But I think if I had a set or something like two pairs I would had bet flop and turn. Don't you think it is better to check on turn to control the pot and call on river ?

If I was he I think I would bet only totally airs but with at least one card with clubs to block something, Jacks, flush and straights. My pocket pairs I don't think I would bet maybe depending on the villain .

I wouldn't worry so much about being face up as a J at this level. A really good player will work out he's polarised relative to you and jam his remaining 1.3x on the river with a balanced selection of both bluffs and value hands, putting you in a really difficult spot - but not in a $1 game.

Also you're not really face-up as a J, you're capped about there but you can have a lot of air which should make the decision to call the top of your range easier.

If you want to pot control it's better to check river than to check turn because you keep control of the hand and can get called by people putting you on a draw.