I don't remember which limit this hand was played at so am just going to write in BB. Assume 100BB stacks. I'm ignoring rake because it makes things complicated.
4-Handed
Dealt to SB Hero (A :diamond:J :diamond:)
Preflop:
CO fold, BU Calls, Hero Isolates to 4BB, BB folds, BU Calls
Flop: 9.5BB 9 :spade:7 :diamond:2 
Hero bet 5.5BB, BU Calls
Turn: 20.5BB 8 
Hero Checks, BU Checks
River: 20.5BB K
Hero?????
It feels like this spot must come up fairly often, so we should be able to gain an edge by working out how often we want to stab versus an average opponent and what reads we will want to adapt our range/ how we adapt it.
