Bottom Set vs Top Set: Was This All-In Correct or Wrong?

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Bottom Set vs Top Set: Was This All-In Correct or Wrong?

In a 5/10 cent approx $5 buy-in cash game, a player with bottom set faces an opponent's all-in and eventually finds out the opponent has top set. This article reviews the hand, analyzing from a GTO perspective whether the decision was correct, as well as the impact of live reads.

Hand Review

Recently, a player shared a hand from a 5¢/10¢ (approximately $5 buy-in) cash game on Reddit, asking the community to judge whether his decision was correct.

The game was 4-handed, and the player held 3♥3♣ in position. The small blind (considered the only solid player at the table, referred to as "Villain") raised to 45¢, the big blind called, and the player also called.

Flop: 3♠ 9♦ 10♦, giving the player bottom set. The small blind bet 50¢, the big blind called, and the player raised to $1.50. The small blind then shoved all-in, and the big blind (a fish) showed QK and called before the player acted.

The player hesitated to call, suspecting Villain might hold 99 or 1010 (top set), but thought it was less likely and more likely two pair or a flush draw. Ultimately, the player called, Villain showed 99 (top set), the turn and river offered no help, and the player lost the pot.

Decision Analysis

From a GTO (Game Theory Optimal) perspective, when a player holds bottom set facing an all-in, they should usually call because sets are very strong and Villain's range includes many combos (TPGK, two pair, flush draws, occasional bluffs). However, in this specific situation, several factors are worth considering:

  • Board Texture: The flop is 9♦10♦, with straight and flush draws. After raising from the small blind and c-betting on the flop, Villain's shove suggests a strong range. After the player raised, Villain chose to shove, indicating he is not afraid of the player having made a hand.
  • Villain Tendencies: The player mentioned Villain sometimes bluffs, but his body language suggested a very strong hand. Live reads indicate danger, but GTO does not include body language.
  • Range Analysis: The player only loses to 99, 1010, 33 (extremely unlikely and blockered), and very rare combo draws (e.g., straight+flush draws). He beats top pairs (e.g., A9, K9), two pairs (e.g., 9-10, 10-3? unrealistic), flush draws (non-strong draws), etc.

In low-stakes games, opponents rarely shove with top pair or weak two pair, so the actual range is likely skewed toward strong made hands or strong draws. The player considering a fold is not unreasonable, but overall, calling a shove of about $5 with $1.50 invested, given pot odds, is usually correct.

Conclusion

In the long run, bottom set on the flop is a very strong hand, and calling an all-in is +EV. Even if you occasionally run into top set, you shouldn't let the result bias your decision. The player's doubt is more a result of outcome-based bias.

FAQ

Q: How to determine if an opponent holds top set?

A: There is no absolute method, but you can consider pre-flop actions (e.g., small blind might raise with 99), post-flop bet sizing (e.g., overbet), and opponent's tight-passive tendencies. Most of the time, bottom set vs top set is a cooler and unavoidable.

Q: Should you fold if you also have a draw in this hand?

A: Even with a flush draw, bottom set is still stronger than a flush draw. Against an all-in, bottom set has high equity and should not be folded.

Q: Should the player have raised smaller to control the pot?

A: Raising to $1.50 into a $1.45 pot (about 2/3 pot) is a standard value raise. Raising smaller might give opponents correct odds to draw, which is not optimal.

Tags

Low stakes cash game, Bottom set, Flop, All-in decision, Poker strategy, Hand analysis

FAQ

There is no absolute method, but you can combine preflop actions e.g., SB might raise with 99, postflop bet sizing whether overbet, opponent's tight-passive tendencies, etc. In most cases, bottom set vs top set is a cooler, unavoidable.