55 vs 22 Odds: Pocket Fives vs Pocket Twos

55 Wins

81.8%

22 Wins

16.5%

Tie

1.7%

What are the exact 55 vs 22 preflop odds?

Pocket Fives (55) win 81.8% of the time against Pocket Twos (22) preflop. 22 wins 16.5% and ties account for 1.7%. This is a low-pair domination matchup — 55 holds two cards that rank above 22's pair, leaving 22 with only two outs (the remaining deuces) as its primary winning path. 22 flops a set approximately 11.8% of the time; when it does, 22 becomes roughly an 88% favourite. 55 vs 22 has the same equity structure as 55 vs 33 (81.7%) with a minor difference reflecting 22's marginally lower board connectivity.

Is 22 a pure set-mine against 55?

Yes — 22 against 55 is a textbook pure set-mine. 22's primary winning path is flopping three twos (~11.8% of flops). Unlike medium pairs that pick up OESD equity on connected boards, 22 operates in the absolute lowest connectivity range: deuce-high boards are the rarest board type in poker (approximately one-third as frequent as mid-board textures), and 22's only straight possibilities require A-2-3-4-5 (the wheel). The secondary equity — wheel board draws, runner-runner scenarios — accounts for approximately 4.7% of 22's 16.5% total equity. Treating 22 as a pure set-mine vs 55 is the correct strategic framing.

What happens on the A-2-3-4-5 wheel board?

The A-2-3-4-5 board is the most unusual scenario in 55 vs 22. Both hands complete the wheel straight: 22 uses the A-2-3-4-5 board with its two as part of the straight, and 55 uses the A-2-3-4-5 board with its five as the top of the straight. Both players hold A-5 straight (ace to five), which results in a chop — the pot is split equally. This is one of the few board textures in low-pair domination matchups where the outcome is a split rather than a win for either player. The chop rate partially explains the 1.7% tie figure across all suit configurations.

What is the 5-2-x set-over-set scenario?

On a 5-2-x flop, both 55 and 22 have flopped sets simultaneously. 55 has top set (three fives) and 22 has bottom set (three twos). 55 wins approximately 85% from this point — 22 can only win by making four twos (quads) or by the board running out a full house of twos-over-fives that beats 55's full house. Both players will typically commit all chips on the 5-2-x flop — it is a classic cooler. Note that the 5-2-x set-over-set scenario is statistically rare: approximately 0.3% probability given both players hold pocket pairs.

Why does 55 vs 22 have slightly higher equity than 55 vs 33?

55 wins 81.8% vs 22 compared to 81.7% vs 33. The marginal difference (0.1 percentage point) reflects the fact that 22 has slightly less board connectivity than 33. Specifically: 33 benefits from A-2-3 boards (giving 33 a partial wheel draw that requires only two running cards — 4 and 5), while 22 on A-2-3 boards doesn't directly improve (22 needs A-2-3-4-5 to complete, which also gives 55 the same straight). The wheel board chop means 22's secondary equity is marginally lower than 33's partial-draw equity, resulting in 55 winning a slightly higher percentage vs 22 than vs 33.

How does the wheel board uniquely affect 55 vs 22 compared to other low-pair matchups?

The A-2-3-4-5 board is uniquely relevant to 55 vs 22 compared to other 55 matchups. In 55 vs 44: 44 cannot make the wheel (needs A-2-3-4, which gives 44 an OESD but 55 makes the straight by adding the 5). In 55 vs 33: 33 cannot make the wheel on A-2-3-4-5 without 55 also making it. But in 55 vs 22: A-2-3-4-5 gives BOTH players the complete wheel straight simultaneously — producing a chop. This chop effect slightly depresses 55's win percentage vs 22 compared to what you'd expect if 22 had zero secondary equity.

What are the implied odds for 22 set-mining vs 55?

22 set-mining vs 55 requires the standard 7:1 implied odds ratio. If 55 raises to 3BB, 22 needs to win approximately 21BB extra when it flops a set to break even on the call. Effective stacks should be at least 63BB in this case. Against 55 specifically, 22's implied odds are decent — 55 will often bet multiple streets on low boards as an overpair, paying off 22's sets on deuce-high boards. However, 55 is a medium-low pair that may exercise more caution on 2-high boards than a big pair would, slightly reducing 22's real-world implied odds versus the theoretical calculation.

Where does 55 vs 22 fit in the full low-pair domination spectrum?

55 vs 22 (81.8%) sits at the upper end of 55's range against lower pairs: 55 vs 44 (81.5%), 55 vs 33 (81.7%), 55 vs 22 (81.8%). The pattern — higher equity as rank gap increases — reflects decreasing board connectivity for the underdog. 22 connects to fewer board textures than 33 or 44, giving 55 slightly more clean overpair situations. Compared to the broader low-pair spectrum, 55 vs 22 matches 66 vs 33 and 77 vs 44 at 81.8% — showing that the rank-gap effect is remarkably consistent across the entire low-pair domination matrix.