PokerStars - $0.50 NL FAST (6 max) - Holdem - 6 players
Hand converted by Holdem Manager 3 : http://www.holdemmanager.com

BTN: $53.92 (107.8 bb)
Hero (SB): $62.61 (125.2 bb)
BB: $140.67 (281.3 bb)
UTG: $52.00 (104 bb)
MP: $51.44 (102.9 bb)
CO: $104.14 (208.3 bb)

Hero posts SB $0.25, BB posts $0.50

Pre Flop: (pot: $0.75) Hero has 4s Ac
4 folds, Hero raises to $1.50, BB calls $1.00

Flop: ($3.00, 2 players) 6d 8c 8h
Hero bets $0.95, BB calls $0.95

Turn: ($4.90, 2 players) As
Hero checks, BB bets $1.54, Hero calls $1.54

River: ($7.98, 2 players) 9h
Hero checks, BB bets $11.37, Hero folds

Results: $7.98 pot ($0.40 rake)
Final Board: 6d 8c 8h As 9h

BB wins $7.58

so the flop I cbet 50/50 i do not have any reads on villain so I choose the aggressive route as they overfold on 50NL but this seems to be a good player which I did not know starting the hand.

So I bet check the turn which I can also bet some of the time , he bet very small which I think is already dubious, on the river he insta overbets easy call? or can he have better Ax? or just polarized 8x or total bluff? I do not know what to do on this river so just folded without any reads