Leading into the preflop raiser with marginal made hands is a major leak; check-call to protect your range and realize equity.
Leading into the aggressor (donking) is rarely optimal here. We should check our entire range to allow the raiser to continue with their air and overcards.
Note: Donk betting with top pair on a wet board is a mistake; checking allows you to bluff-catch and protects your range against the raiser's overpairs.
After leading the flop, we should shift to a check. Our pair of sixes is now second pair and functions best as a bluff-catcher rather than a value hand that can withstand a raise. **Ranges:** The Ten hits the raiser's range hard, improving hands like ATs, KTs, or QTs to top pair. By betting, we isolate ourselves against these better hands and overpairs like JJ-AA while folding out the air we want to keep in. **Board:** The Ten is a swingy card that shifts the range advantage toward the raiser. While we still have decent equity, our hand is too vulnerable to build a large pot out of position. --- > **Takeaway:** When the turn card favors the preflop raiser, check your marginal made hands to control the pot size.
Note: Betting second pair into a range that just improved is overplaying the hand; checking is mandatory to realize equity.
Once we bet and face a large raise, we are priced in to call given the shallow SPR, despite our hand being a clear underdog to Villain's value range. **Math:** We are getting 1.8:1 on a call, needing roughly 36% equity. With a pair and no blockers to the spade draws, we have enough equity against a polarized range that includes semi-bluffs like As3s or 9s8s. **Plan:** We are essentially committed. On most rivers, we will be check-calling or facing an all-in, as the SPR is now so low that folding becomes difficult if any bluffs remain in Villain's range. --- > **Takeaway:** In low SPR situations, marginal pairs often become mandatory calls against aggressive raises due to pot odds.
Leading the river is a significant error. We have a pure bluff-catcher that loses to all value and only beats missed draws; we must check to let Villain bluff. **Ranges:** Villain's raising range on the turn is heavily weighted toward sets (44, 55, 66), straights (34s), and top pairs. By betting, we never get called by worse and only get raised by hands that have us crushed. **Sizing:** Betting nearly full pot here is nonsensical for a second pair. It turns our hand into a bluff, but we don't block any of the primary value hands Villain would fold, like a Ten. --- > **Takeaway:** Don't lead the river with a bluff-catcher; check to give missed draws a chance to bluff into you.
Note: Leading the river with second pair is a massive mistake; you fold out all bluffs and only get called by better hands.
Facing a min-raise for the tiny remainder of the stacks, we are mathematically forced to call regardless of how likely it is we are beaten.