($60) Flopping TP on level 3

[Conspiracy]

Standard? When checking the turn (which is standard IMO) I pretty much have to call the riverbet?

Poker Stars
No Limit Holdem Tournament
Blinds: t25/t50
6 players
Converter

Stack sizes:
UTG: t1455
UTG+1: t2485
CO: t1745
Button: t1980
SB: t4445
Hero: t1390

Pre-flop: (6 players) Hero is BB with T[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/spade.gif[/img]
3 folds, Button calls t50 <font color="aaaaaa">(pot was t75)</font>, SB calls t25 <font color="aaaaaa">(pot was t125)</font>, Hero checks.

Flop: 5[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/heart.gif[/img] (t150, 3 players)
SB checks, <font color="#cc0000">Hero bets t75</font>, Button folds, SB calls t75 <font color="aaaaaa">(pot was t225)</font>.

Turn: 4[img]/images/graemlins/diamond.gif[/img] (t300, 2 players)
SB checks, Hero checks.

River: Q[img]/images/graemlins/club.gif[/img] (t300, 2 players)
<font color="#cc0000">SB bets t100</font>, Hero calls t100 <font color="aaaaaa">(pot was t400)</font>.

Results:
Final pot: t500