$6.5 18ppl sng. Flop MPNK + flush draw against 3 others.

[Sykes]

I suck at postflop play..

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) Hand History converter Courtesy of PokerZion.com

MP3 (t2790)
CO (t1490)
Button (t1400)
SB (t1460)
Hero (t1500)
UTG (t1460)
UTG+1 (t1500)
MP1 (t280)
MP2 (t1620)

Preflop: Hero is BB with 6[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, MP2 calls t20, <font color="#666666">2 folds</font>, Button calls t20, SB completes, Hero checks.

Flop: (t80) Q[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets t60</font>, MP2 calls t60, Button calls t60, SB folds.

I thought leading out was best so I could bet/3bet all in with the hand..

Turn: (t260) 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP2 checks, <font color="#CC3333">Button bets t80</font>, Hero calls t80, MP2 calls t80.

After I got 2 callers I put one of them on a Q and the other on a J. I really don't know if checking is the best play here, it seemed right. When MP2 bet 1/3rd pot, I thought he had a weak hand and wanted to c/r but ended up calling instead.. thoughts?

River: (t500) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">MP2 bets t200</font>, Button folds, Hero folds.

Final Pot: t700

River comes, and MP2 leads after I check to him which is strange because I put mp2 on a straight draw. But what straight draw does he have that I beat unless he's terrible and has J2-J7 here.. (or he has a busted flush draw)..

Thoughts?