SB was playing 95% of his hands, betting 1$ every flop, and had already tried & failed to bluff the river vs me.
NL Holdem $1(BB) Merge
SB ($145)
BB ($128)
UTG ($99.50)
UTG+1 ($99.50)
UTG+2 ($184)
Hero ($236)
CO ($63.19)
BTN ($134)
Dealt to Hero J

A
fold, fold, fold,
Hero raises to $3, fold, fold, SB calls $2.50, fold
FLOP ($7) 8

4

A
SB bets $1,
Hero raises to $7, SB calls $6
TURN ($21) 7
SB bets $1,
Hero raises to $20, SB calls $19
RIVER ($61) A
SB bets $115 (AI),
Hero calls $115
Hero shows J

A

(Pre 64%, Flop 92.4%, Turn 88.6%)
SB shows K

7

(Pre 36%, Flop 7.6%, Turn 11.4%)
Hero wins $289