11$ Early stage, how do i play 2nd nuts here? (JTo)

[MantridNinja]

1st level of blinds, no real reads at player, but the whole table in general seems to be calling alot of "possible steal" raises with a wide range of hands

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) internettexasholdem.com

Hero (t1840)
MP3 (t1660)
CO (t1730)
Button (t1960)
SB (t1190)
BB (t1000)
UTG (t1200)
UTG+1 (t1290)
MP1 (t1630)

Preflop: Hero is MP2 with T[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t60</font>, MP3 calls t60, <font color="#666666">2 folds</font>, SB calls t50, BB calls t40.

Flop: (t240) 9[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, <font color="#CC3333">Hero bets t180</font>, <font color="#CC3333">MP3 raises to t400</font>, SB folds, BB folds, Hero calls t220.

Turn: (t1040) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP3 bets t300</font>, Hero calls t300.

River: (t1640) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t500</font>, <font color="#CC3333">MP3 raises to t900</font>, Hero calls t400.

Final Pot: t3440

Whats the best possible way to play it? Whats the river play? I feel that my check on the turn was a mistake.

Results:

<font color="white"> he shows ATo, ouch </font>