Flop Analysis
Checking our Ace-high with backdoor flush potential is standard, mixing evenly between checking and small c-bets to protect our out-of-position range on a paired board.
Even with the lowest flush on a four-flush runout, favorable pot odds require calling down polarized river raises.
Checking our Ace-high with backdoor flush potential is standard, mixing evenly between checking and small c-bets to protect our out-of-position range on a paired board.
Checking is pure on this turn. Picking up the flush draw gives us equity, but out of position we want to control the pot and realize our equity cheaply.
Stabbing small here targets worse made hands that checked twice, though sizing up toward two-thirds pot extracts more value against stubborn pairs.
Folding here over-folds our range against a polarized raise. While holding the 3♠ means we only beat bluffs, the pot odds dictate that our hand must function as a bluff-catcher. **Math:** Getting 2.1:1 on a call, we only need 32.8% equity to break even. Against a polarized range containing natural bluffs, our flush retains 36.4% equity, netting +3.6 BB over folding. **Ranges:** The big blind's raise represents high flushes for value alongside turned-into-bluff holdings such as pairs with straight blockers (like JxTx without a spade). Folding out made flushes surrenders too much of our defending frequency. --- > **Takeaway:** On four-flush runouts, even the lowest flush catches enough bluffs to make calling profitable at favorable pot odds.
Note: Folding a flush surrenders too much equity against a polarized raise; getting over 2:1 pot odds, we must call as a bluff-catcher.