Hand analysis - what do you think this guy could have?

[PokerFox]

Brand new table, haven't seen anything yet on this guy.

PokerStars 2/4 Hold'em (9 handed) converter

Preflop: Hero is MP2 with Q[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">5 folds</font>, UTG calls.

Flop: (5.50 SB) J[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, UTG calls.

Turn: (3.75 BB) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, <font color="#CC3333">Hero 3-bets</font>, UTG calls.

River: (9.75 BB) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, UTG folds.

Final Pot: 10.75 BB

Only thing I can thing is some type of high straight draw? I can't tell, really.