Folding 88 on a Ten-high turn with a low SPR is a significant mistake, as we still beat all of Villain's semi-bluffs.
Flop Analysis
Calling is perfectly fine here, though shoving is a high-frequency GTO alternative to deny equity to Villain's overcards.
**Ranges:** The SB has a nut advantage with AA-JJ, but this board texture (6-6-4) is relatively safe for our overpair. We beat all of Villain's AK/AQ/AJ type hands which will frequently c-bet this texture.
**Sizing:** Facing a half-pot bet, we have an easy continue. Our hand is too strong to fold and functions well as a bluff-catcher that can also improve to a full house.
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> **Takeaway:** On low, paired boards, overpairs are too strong to fold and often benefit from aggressive protection to deny equity to overcards.
Turn Analysis
Folding here is a significant error. While the Ten is an overcard, the extremely low SPR means we are effectively committed with a hand that still has ~50% equity against Villain's range.
**Math:** Getting roughly 2.3:1, we only need 30.7% equity to continue. Against a range that includes many diamond draws (AdKd, AdQd), heart draws (AhJh), and pure air bluffs, 88 is well above that threshold.
**Blockers:** By holding the 8h and 8c, we don't block the primary diamond or heart draws Villain would be semi-bluffing with, which actually increases the likelihood that Villain is betting with a draw rather than a made hand like AT or JJ.
**Plan:** With an SPR of 0.54, we should be looking to get the money in. Shoving is preferred over calling to maximize our equity realization and prevent Villain from checking back rivers where they might have bluffed.
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> **Takeaway:** When the SPR is below 1.0, you cannot fold high-equity bluff-catchers just because a single overcard hits the board.
Note: Folding 88 here is a massive over-fold; with an SPR of 0.54, your hand has more than enough equity against Villain's bluffs and draws to justify a stack-off.