While our overpair is strong, we must navigate carefully on paired boards and Ace-high rivers where the opponent's range is more condensed.
Checking is the preferred play here. While we have an overpair, the SB's flatting range is very dense with hands that connect well with this low-to-middling texture.
Note: Betting is fine, but checking back more frequently protects our range and realizes equity on a board that slightly favors the caller.
The 8d is a significant card that pairs the board. We should mix between checking and medium sizing; our pot-sized bet is quite aggressive given the range disadvantage.
Note: Using a pot-sized bet is too polarizing here; solver prefers checking or a smaller 65% sizing to keep the SB's wide range in.
Checking back is mandatory once the Ace hits. Our hand has shifted from a strong overpair to a marginal second pair that can no longer extract value from worse.