25/50 Borgata, 4-5 handed game (can't remember exact specifics).
BTN and SB are both young aggressive regs who are active but not crazy. Generally play very tight when the game is FR but definitely open up (as they should) when game is shorter. I get the impression that BTN is kind of sticky in position in shorthanded pots as well.
Effective stacks ~8k or so. I might get some of the bet numbers wrong but they won't be too off.
Preflop (75): folds to BTN who opens to 150, SB 3bets to 475, BB folds, BTN calls.
Flop (1000): K
Q
2
SB bets 650, BTN calls.
Turn (2300): 2
SB bets 1175, BTN calls.
River (4650): J
SB bets 2950, BTN tanks for a while and calls.
What is SB's value and bluffing range here on this board and what should BTN's calling range be? I will give results later but I was a little surprised by the showdown.