PokerStars - $6.48+$0.52|15/30 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 3

Hero (MP): 1,470.00
CO: 705.00
BTN: 1,535.00
SB: 1,170.00
BB: 2,590.00
UTG: 1,530.00

SB posts SB 15.00, BB posts BB 30.00

Pre Flop: (45.00) Hero has J J

UTG calls 30.00, Hero raises to 100.00, fold, fold, SB calls 85.00, fold, UTG raises to 1,530.00 and is all-in, Hero ??

Villain is 51/13 over 55 hands so I know he isn't very good. What do you think I should here? Can he have QQ+? If he does, I don't understand why he raised all in. I think is more likely for him to have AQ, AK or a pair smaller than mine.

Vs a sane guy it's ok to fold. I'm smashing the call button so hard here w/o a good read on his limp/shoev range

He had aces, don't be results oriented!

Yes I am psychic

Villain is loose passive, it's not costing him much more to call (I'd raise to 120 pre) surely he happily limp calls with everything that you're way ahead of? Maybe he likes to play AK this way but he's also got KK+ here, Id fold JJ, don't think I could fold QQ.

I came ITT to learn how one check-raises preflop.

#imdisappointed

As for the hand, folding is perfectly fine against fishy loose-passive villains.
I don't mind a call either.

Against a 51/13 I have no problems folding this here. I don't expect a villain with such a large gap between VPIP and PFR to be reraising all-in light preflop.

Random fish definitely do this with enough hands that you can call here. Insta fold vs nit.

Given his stats, I'd expect this to be a spazz out most of the time. Can see him having a lot of worse pocket pairs

An irrational opponent taking an irrational line. Not sure why people are assuming rationality.

AK/Aq are the most likely here I think

They have 55 so often it's a joke and consequently you click call very very quickly.

This.

PokerStars - $6.48+$0.52|15/30 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 3

Hero (MP): 1,470.00
CO: 705.00
BTN: 1,535.00
SB: 1,170.00
BB: 2,590.00
UTG: 1,530.00

SB posts SB 15.00, BB posts BB 30.00

Pre Flop: (45.00) Hero has J J

UTG calls 30.00, Hero raises to 100.00, fold, fold, SB calls 85.00, fold, UTG raises to 1,530.00 and is all-in, Hero calls 1,370.00 and is all-in, fold

Flop: (3070.00, 2 players) 7 A 4

Turn: (3070.00, 2 players) 5

River: (3070.00, 2 players) A

UTG shows K K (Two Pair, Aces and Kings) (Pre 81%, Flop 92%, Turn 95%)
Hero shows J J (Two Pair, Aces and Jacks) (Pre 19%, Flop 8%, Turn 5%)
UTG wins 3,070.00

I didn't think he had KK, I was expecting something like AQ+ or smaller pairs.

He can obv have top of his range here but he has enough weaker hands to make this profitable.