A4s BU on 743r: Don’t Torch The Combo Draw
- Hero
- A♣4♣
- Position
- BU vs CO
- Pot
- 3-Bet Pot
- Flop
- 7♣ 4♦ 3♥
The 3-bet pre is fine, but postflop we underuse checking on the flop, overbet a spot where we’re behind range-wise, and then overfold a monster draw getting great odds.
Flop Analysis
We mostly want to check this flop with second pair and backdoor clubs; when we do bet, the strategy uses a large size, not a small probe.
**Ranges:** CO’s 3x open has more strong overpairs and 7x, while our 3-bet range is heavy on overcards and air; A4s with second pair sits in the middle of our range and is very happy to realize equity in position.
**Board:** Low, connected, 7‑high and rainbow gives CO plenty of strong made hands and good draws; with SPR >6, big pots tend to favor the range that already has top pair+ more often.
**Sizing:** Solver lines up our specific hand as mostly check, and when it does bet it uses a chunky ~75% pot size; a 1/3-pot stab doesn’t fold out many overcards, bloats the pot versus better pairs, and under-realizes our positional advantage.
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> **Takeaway:** With medium-strength hands on low, dynamic boards at deep SPR, leaning on checks in position is stronger than auto-stabbing small.
Note: Flop should mostly be a check, and if we choose to bet it should be with a large size; the small c-bet is both the wrong frequency and the wrong sizing.
Turn Analysis
Turn is a great card for our hand but a very strong card for CO’s range; betting is fine with this combo draw, but the overbet is where we go wrong.
**Ranges:** CO reaches the turn with plenty of straights (5x), sets, two pair and strong 7x plus some overpairs; our range after betting flop is quite draw-heavy, so when we overbet we polarize into bluffs and very strong value against a range that already has the nut advantage.
**Board:** The 6c massively increases connectivity and adds our nut-flush draw plus gutshot, but it also completes multiple straights and strengthens CO’s existing sets/two-pair; we’re high-equity but still behind a lot of CO’s continuing range.
**Sizing:** With this specific combo, solver prefers betting but around 70–80% pot, not 135%; the overbet forces CO to continue mainly with very strong made hands and better draws, killing our fold equity and setting up a nasty spot vs raises.
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> **Takeaway:** When the turn is great for our hand but even better for villain’s range, favor strong but not overbet sizing with draws and avoid polarizing into a range that’s already ahead.
Note: Using a 135% pot overbet instead of a more standard ~75% pot bet with our combo draw drives action against a much stronger range and creates a tough spot versus raises.
Turn Analysis
After we overbet and get raised, folding this strong combo draw getting 3.5:1 is too tight in theory, but population tendencies make the spot closer in practice.
**Math:** We’re calling 69.2bb to win 203bb, so need ~22% equity; with second pair, nut-flush draw and a gutshot, our hand has well over that versus a reasonable raising range, even if heavily value-weighted.
**Ranges:** CO is very value-heavy after check–call flop, check–raise turn versus an overbet on this texture, but even versus sets, straights and strong 7x we retain solid equity; solver wants us to continue (mix of call/jam) with this specific combo despite the overall range folding a lot.
**Exploits:** At NL200, many players almost never bluff-raise this turn in 3-bet pots, so exploitatively we can tighten up our continuing range; even then, folding this precise hand is likely too conservative unless we know CO is extremely nitty.
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> **Takeaway:** When holding a monster draw plus a pair and being offered great odds, we should almost always continue—even versus a strong range—unless we have very clear evidence villain never bluffs.
Note: Given the excellent pot odds and very high equity of second pair + nut-flush draw + gutshot, folding to the turn raise is a significant overfold.
Key Concepts
- 6.4
- Villain Slight Advantage
- IP
- Wet Board
- LEAN TOWARD CHECK