I open A
4
in MP, CO calls, BB calls.
CO is loose and overly tricky pre and post, capable of cold calling with a wide variety of hands. BB is a balanced crusher who doesn't have a 3bet range in this spot.
Flop J
6
4
I check, CO bets, BB raises, I call, CO calls
T
BB checks, I check, CO bet, BB calls, I call
7
BB checks, I check, CO bets, BB folds, I fold.