Flop Analysis
At SPR ~1 with second pair on a dry K-high board where we have range advantage, theory wants a small bet with this combo; shoving overplays a medium-strength hand and polarizes us unnecessarily. **Board:** K-4-3 rainbow with some straight draws available but no flush draws heavily favors our tight 4-bet range: we have all the strongest Kx and overpairs, while SB has more middling pairs and whiffed broadways. Our actual hand is strong but not top of range — it’s second pair to the K, not a nutted holding — which is perfect for a small, range-bet type sizing. **Ranges:** Our 4-bet range is very value-heavy here (AA, KK, AK, some other strong hands plus a few bluffs), while SB’s flat range contains a lot of medium pairs (99–JJ), some Kx, and the occasional trap. With that structure, the best use of second pair is to bet small to extract from worse pairs and deny some equity to overcards/straight draws, while reserving big bets/jams for top pair+ and bluffs that benefit most from fold equity. **Sizing:** Solver output clearly prefers a ~25% pot bet with this specific combo and almost never jams; going all-in turns a hand that wants calls from worse (JJ–TT, some underpairs) into a polarized line where we’re mostly called by top pair or better. We do win the pot here, but structurally we’re burning EV when called because our jam collapses our value range and over-folds out exactly the worse hands we wanted to keep in. --- > **Takeaway:** With second pair and range advantage at low SPR, use a small c-bet — save the shove for top pair+ and bluffs, not mid-strength bluff-catchers.
Note: Shoving flop with second pair at SPR ~1 is too polarizing; a small c-bet line wins the pot often while keeping dominated hands and worse pairs in instead of folding them out.