50NL 6m Rivered nut straight decision

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($19.50)
Hero ($59.55)
UTG ($24.05)
MP ($29.50)
CO ($32.35)
Button ($30.40)

Preflop: Hero is BB with Khttp://www.flopturnriver.com/phpBB2/...iles/heart.gif, Ahttp://www.flopturnriver.com/phpBB2/...iles/spade.gif.
2 folds, CO raises to $1.5, Button calls $1.50, 1 fold, Hero raises to $5, CO calls $3.50, Button calls $3.50.

Flop: ($15.25) 3http://www.flopturnriver.com/phpBB2/...iles/spade.gif, Thttp://www.flopturnriver.com/phpBB2/...miles/club.gif, Jhttp://www.flopturnriver.com/phpBB2/...iles/heart.gif (3 players)
Hero checks, CO checks, Button checks.

Turn: ($15.25) Jhttp://www.flopturnriver.com/phpBB2/...es/diamond.gif (3 players)
Hero checks, CO checks, Button checks.

River: ($15.25) Qhttp://www.flopturnriver.com/phpBB2/...es/diamond.gif (3 players)
Hero bets $10, CO raises to $20, Button folds, Hero ???

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No strong reads on Villian, he is 31/10/1 over a measly 12 hands.

What's your play on the river?

hmmm very interesting, it seems unlikely that the CO would check trip jacks on the turn...

my initial thought is to just call, since he could've uber-slowplayed a J and fullied. or hit a fully with QQ on the river. But it's also possible he has K9 or 89, or trip jacks without a boat. i think pushing or calling is about even EV

Just call.

The most likely hand I think is AK... but yea just call.

weird because CO has only ~$7 behind. I probably just RR and pay off a boat. He kinda has to call with anything.

definitely push since he only has 7 more and most boat hands seem unlikely