20+2 Tough River with second Nuts (1st Post!!!)

[quarkncover]

I've been reading twoplustwo for quite some time now and today rallied up the courage to finally post. Now I know a lot can be said about the pre-flop, flop and turn play here, but what I am really interested in is the river play here. When the BB leads out with a pot-sized bet on the river, I am thinking with that board he could easily have a one pair or two pair type hand and he's trying to buy-it it, maybe even a straight with a lower diamond, so many possibilities, but I just can't see a player at this level leading out with a royal, so I go into the the tank...suggestions?

Ultimate Bet No-Limit Hold'em Tourney, Big Blind is t40 (8 handed) converter

Hero (t1975)
UTG+1 (t835)
MP1 (t5255)
MP2 (t1730)
CO (t825)
Button (t1330)
SB (t785)
BB (t2265)

Preflop: Hero is UTG with 9[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/heart.gif[/img].
Hero calls t40, <font color="#666666">6 folds</font>, BB checks.

Flop: (t100) T[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t100</font>, BB calls t100.

Turn: (t300) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t150</font>, <font color="#CC3333">BB raises to t300</font>, Hero calls t150.

River: (t900) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333"> BB bets t900</font> Hero???? Results to follow!