PokerStars No-Limit Hold'em Tourney, Big Blind is t300 (6 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

UTG plays very many pots and makes a ton of small raises pre. However he has almost every time turned the best hand over at showdown. We are pretty deep in tournament and I've noticed that he raises bigger with the top hands, so I ruled out AA, KK, QQ and AK here. It seems to me that he doesn't care too much about position.

Hero (t19878)
BB (t10994)
UTG (t44241)
MP (t15705)
CO (t13150)
Button (t26466)

Preflop: Hero is SB with , .
UTG raises to t800, 3 folds, Hero calls t650, BB calls t500.

Flop: (t2075) , , (3 players)
Hero checks, BB checks, UTG bets t1600, Hero calls t1600, BB folds.

Turn: (t5275) (2 players)
Hero bets t2300, UTG raises to t5400, Hero calls t3100.

River: (t16075) (2 players)
Hero checks, UTG bets t7800

Hero?

Fold preflop - especially after UTG opens. KQ is a trap hand as AK/AQ just dominate the crap out of it. Also, you're OOP the rest of the way.

As played, I bet more on the turn (3,500) as that small little donk bet just says that you're weak. If he comes over the top of your turn bet, then let it go since he's turned over winners at showdown consistently.

Fold to his turn raise as played.

Fold PF would have been better.

i check/raise the flop and check fold the turn if i get action after the check raise. preflop call is okay, you're in position and against a loose/agressive guy i'm not that concerned about AK / AQ like the other guys here. Your description sounds like he's one of that QJ+ out of every position players, who had a little cardrush for a while.