value bet this river?

[MINETZ]

just sat down at teh table, no reads yet, the hand previous to this i raised to 6 got called and the guy bet 10 onthe 9tk flop and i folded.
Party Poker No-Limit Hold'em, $ BB (10 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Hero ($100)
CO ($47)
Button ($65.54)
SB ($84.85)
BB ($107.5)
UTG ($117.27)
UTG+1 ($183.39)
UTG+2 ($91.5)
MP1 ($116.85)
MP2 ($91.5)

Preflop: Hero is MP3 with Q/images/graemlins/spade.gif, A/images/graemlins/heart.gif. SB posts a blind of $0.5.
<font color="#666666">4 folds</font>, MP2 calls $1, <font color="#CC3333">Hero raises to $6</font>, <font color="#666666">4 folds</font>, MP2 calls $5.

Flop: ($13.50) 2/images/graemlins/club.gif, 8/images/graemlins/spade.gif, Q/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
MP2 checks, <font color="#CC3333">Hero bets $10</font>, MP2 calls $10.

Turn: ($33.50) T/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
MP2 checks, <font color="#CC3333">Hero bets $15</font>, MP2 calls $15.

River: ($63.50) K/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
Hero:???
Final Pot: $63.50

[TheWorstPlayer]

Bet more on the turn. Check the river.

[PoBoy321]

I guess MP2 checked the river?

I'd check behind.