QQ and river overbet, $100NL

[CourtesyFlush]

I wanted to post this to get some information about "typical" $100NL players. Does checking the turn and then overbetting the river when you check behind usually mean a monster? Usually when a player overbets, I put them on either a monster or a complete bluff. Here I thought it was more likely that the player had a very stong hand than nothing at all. SB was an aggressive player but not dumb aggressive. He seemed to be pretty solid. Comments on my play here?

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) pokerhand.org hand converter

Hero ($100.95)
CO ($93)
Button ($102.80)
SB ($377.67)
BB ($21.90)
UTG ($99)

Preflop: Hero is MP with Q[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.50.
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $4</font>, <font color="#666666">2 folds</font>, SB (poster) calls $3.50, <font color="#666666">1 fold</font>.

Flop: ($9) 9[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $1</font>, <font color="#CC3333">Hero raises to $9</font>, SB calls $8.

Turn: ($27) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

River: ($27) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $30</font>, Hero folds.

Final Pot: $57