[TomBrooks]

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Preflop: Hero is MP with 9[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">3 folds</font>, BB calls, UTG calls.
Flop: (6.50 SB) 5[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets</font>, UTG folds, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">BB 3-bets</font>, Hero calls.
Turn: (6.25 BB) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets</font>, Hero calls.
River: (8.25 BB) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets</font>, Hero calls.
Final Pot: 10.25 BB
Results in white below: <font color="#FFFFFF">
BB has Kd 3s (two pair, kings and sixes).
Hero has 9c 9h (two pair, nines and sixes).
Outcome: BB wins 10.25 BB. </font>

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Without some knowledge of how your opponent plays, it's hard to know what they might have, especially when they're coming from the BB. This opponent is obviously not straightforward. On this hand against an unknow, I like either folding to the flop three bet or capping the flop. If you cap the flop, I think only a maniac would call and bet out on the turn without a hand. Maybe an OESD or A[img]/images/graemlins/heart.gif[/img] X[img]/images/graemlins/heart.gif[/img] would bet out the turn, but it would be an unfortunate coincidence if he had that.