A2s vs. turn checkraise

[pokerjunky]

Villain is unknown at this point. On the turn I tried to start counting outs but wasn't too sure.

PokerRoom 2/4 Hold'em (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Preflop: Hero is MP with A, 2.
1 fold[/i]</font>, Hero raises</font>,2 folds[/i]</font>, BB calls.

Flop: (4.50 SB) 2, 4, K 2 players)</font>
BB checks, Hero bets</font>, BB calls.

Turn: (3.25 BB) 3 2 players)</font>
BB checks, Hero bets</font>,BB raises</font>, Hero calls.

River: (7.25 BB) Q2 players)</font>
BB bets</font>, Hero folds.

Final Pot: 8.25 BB