I know it don't look like much, but it was my biggest loss of the day, and I'm not sure what to think of my play. As soon as the flop, I didn't like my flat call from the CO. As played I should call the river here right?

PokerStars No-Limit Hold'em, $0.10 BB (9 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($6.55)
BB ($11.40)
UTG ($10.90)
UTG+1 ($10.55)
MP1 ($7.20)
MP2 ($8.80)
MP3 ($10)
Hero ($9.70)
Button ($1.30)

Preflop: Hero is CO with K, K. MP3 posts a blind of $0.10.
1 fold, UTG+1 raises to $0.3, 3 folds, Hero calls $0.30, 1 fold, SB calls $0.25, 1 fold.

Flop: ($1.10) 3, 6, 7 (3 players)
SB bets $0.5, UTG+1 folds, Hero raises to $1.5, SB calls $1.

Turn: ($4.10) 9 (2 players)
SB bets $1.3, Hero calls $1.30.

River: ($6.70) A (2 players)
SB bets $1.9, Hero calls $1.90.

Final Pot: $10.50

[ Edit: He's a very sh**ty player. Loose passive pre, and aggresive post flop. I put him here

Text results appended to pokerstove.txt

1,333,260 games 16.675 secs 79,955 games/sec

Board: 3d 6d 7h 9h As
Dead:

equity win tie pots won pots tied
Hand 0: 52.204% 51.50% 00.71% 686694 9425.00 { KcKh }
Hand 1: 47.796% 47.10% 00.71% 627931 9425.50 { 66+, 33, A7s-A6s, K7s-K6s, A7o-A6o, K7o-K6o }