River Play!

Villan 60/20 after 25 hands - means absolutly nothing so basically no read at all.

Wasn't worried about MP, he had a really small stack and a massive donk.

Wasn't sure what to do here on the river when Straight flush card hit on the turn. Thought i bet to see where i was and could lay it down to a push over top. Then check on the river, does this check really mean i dont want to put any more money in or does he want me to commit myself for his over the top CR. Not sure what the right play is here.

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

BB ($36)
Hero ($73.75)
MP ($14.50)
CO ($38.60)
Button ($83.55)
SB ($135.55)

Preflop: Hero is UTG with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.25.
<font color="#CC3333">Hero raises to $2</font>, MP calls $2, <font color="#666666">2 folds</font>, SB (poster) calls $1.75, <font color="#666666">1 fold</font>.

Flop: ($6.50) T[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $4</font>, MP calls $4, SB calls $4.

Turn: ($18.50) Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $15</font>,MP is all-In $8.50, SB calls $15.

River: ($48.50) 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks,<font color="#CC3333"> Hero?

Final Pot: $48.50