55 vs 44 Odds: Pocket Fives vs Pocket Fours
Last updated: May 27, 2026
Pocket Fives (55) wins 81.5% of the time against Pocket Fours (44) preflop. 44 wins 16.8% with ties at 1.7%. This adjacent one-rank low pair matchup mirrors TT vs 99 in structure — but contains a uniquely interesting dynamic: both 55 and 44 connect to the wheel board (A-2-3-4-5). On wheel boards, both pairs gain draw equity simultaneously, creating equity compression that does not exist in other low-pair matchups. 44 completes A-2-3-4 with an open-ended draw, while 55 completes the actual wheel straight.
The Exact Number: 81.5% vs 16.8%
55's 64.7-point margin over 44 is typical for adjacent one-rank pair matchups. The 1.7% tie rate is standard for low pairs. What distinguishes this matchup is not the headline number but the specific board textures where equity compresses significantly — wheel boards uniquely affect both fives and fours in ways that have no equivalent in other common low-pair matchups.
55 Wins
81.5%
44 Wins
16.8%
Tie
1.7%
44's 16.8% equity — slightly higher than 33's 16.5% against 66 — reflects that fours have marginally more secondary board equity than threes, primarily through the A-2-3-4 open-ended draw scenario that threes cannot replicate. The difference is small (0.3 percentage points) but structurally meaningful.
Does the Suit Matter?
Suit combinations affect 55 vs 44 by approximately 0.4 percentage points. 44's primary equity driver (set outs) is completely suit-independent — the variation comes only from flush draw possibilities when 44 shares a suit with a five. The 1.7% tie rate is constant across all suit configurations.
Preflop equity by suit combination
Post-Flop: When Wheel Boards Compress Equity
The wheel board scenarios are the defining post-flop feature of 55 vs 44. On most boards, this matchup behaves like any other low-pair domination: either 44 flops a set and becomes an 88% favourite, or 55 holds an overpair with 93%+ equity. The exceptions — A-2-3 and A-2-3-4 boards — create genuine compression unique to this matchup.
Equity given specific flops and runouts
The Wheel Board Dynamic: When Both Pairs Connect
55 vs 44 is the only common low-pair matchup where both hands have meaningful connections to the same straight (A-2-3-4-5). This shared wheel connectivity creates a post-flop dynamic that has no parallel in other pair-vs-pair matchups at this level.
On an A-2-3 flop: 55 needs a 4 to complete the wheel (A-2-3-4-5), giving 55 an open-ended straight draw. 44 also needs one more card to get into the wheel: specifically a 5 for A-2-3-4-5, or alternatively a 5 for 2-3-4-5-6 if the board cooperates. Both hands have draws, but 55's draw is cleaner — if a 4 hits, 55 makes the wheel and 44 now has an open-ended draw (A-2-3-4). If a 5 then hits, both make the same wheel straight and the hand splits. The equity interplay on wheel boards means a 4 is excellent for 55 and a 5 is the card 44 needs — but 55 also needs a 4, making the two draws partially competing.
On A-2-3-4 board: 44 has now made an open-ended straight draw (needs a 5 to complete A-2-3-4-5, or a different path via 2-3-4-5-6). But a 5 also completes 55's wheel — and 55 wins because it holds the five that completes A-2-3-4-5. The pot splits when both players make the wheel from the same board cards. The equity compresses to approximately 58/42, the closest this matchup comes to parity without 44 flopping a set.
44 equity sources vs 55
- Flop a set of fours (11.8%) × win from there (~88%)~10.4%
- Wheel board straight draws (A-2-3, A-2-3-4 scenarios)~3.4%
- Runner-runner boats and quads~0.8%
- Board-play ties and miscellaneous runouts~2.2%
- Total 44 equity16.8%
Low Pair Domination Reference Table
55 vs 44 in context with the full low-pair matchup spectrum.
55 vs 44 (81.5%) matches TT vs 99 (81.5%) and 66 vs 55 (81.5%) — all adjacent one-rank matchups produce the same headline equity. The wheel board analysis is the structural differentiator that makes 55 vs 44 analytically distinct despite identical headline numbers.
Definitions
Frequently Asked Questions
What are the exact 55 vs 44 preflop odds?
Pocket Fives (55) win 81.5% of the time against Pocket Fours (44) preflop. 44 wins 16.8% and ties account for 1.7%. This is an adjacent low-pair domination matchup — the one-rank gap between fives and fours is the same structural relationship as TT vs 99 or 66 vs 55. 44 has only 2 outs (the remaining fours) to make a set and become competitive. The most interesting element of this specific matchup is that both hands have connections to the wheel board (A-2-3-4-5), creating equity compression scenarios unique among low-pair matchups.
What is unique about the wheel board in 55 vs 44?
The A-2-3-4-5 wheel straight is the only straight that simultaneously involves both fives and fours. On an A-2-3 flop, 55 has an open-ended straight draw needing a 4 to complete the wheel (A-2-3-4-5), while 44 also has an open-ended straight draw needing a 5 to complete A-2-3-4-5 — or alternatively needing a 5 for 2-3-4-5-6. This is unusual: in most pair-vs-pair matchups, the board either helps one hand or neither. On A-2-3, both pairs gain equity, and 55's equity drops from 81.5% to approximately 71.8% because 44 picks up competitive draw equity alongside 55. On A-2-3-4, the equity compresses further — 44 has a near-complete draw to the wheel, and the matchup becomes closer to 58/42 rather than 81/17.
When 44 has an open-ended straight draw on A-2-3-4, does 55 complete the wheel?
Yes — and this is the defining tension in 55 vs 44 on A-2-3-4 boards. If a 5 hits on the turn or river, 55 makes the wheel straight (A-2-3-4-5) and simultaneously gives 44 the worst possible news: 44's hoped-for card (a five) instead completes 55's hand. 44's A-2-3-4-5 straight (with 4 in hand) is actually a lower straight than 55's A-2-3-4-5, but both players make the same straight — so the board completes A-2-3-4-5 and it becomes a split pot unless 66+ is available. This creates an unusual scenario: the one card that would complete 44's draw (a five) also completes 55's straight. 44 must root for a non-5 straight completion, which essentially means 44 needs a 6 for 2-3-4-5-6 after having a four in hand.
What is the 4-5-x set-over-set scenario?
On a 4-5-x flop, both 55 and 44 have flopped sets simultaneously. 55 has top set (three fives) and 44 has bottom set (three fours). 55 wins approximately 85% from this point — 44 can only win by making four fours (quads) or running out a full house of fours-over-fives that beats 55's full house of fives-over-fours. Both players will typically commit all chips on a 4-5-x board — it is a classic cooler where both actions are correct and the outcome is determined purely by card distribution.
How does the one-rank gap in 55 vs 44 compare to other adjacent pair matchups?
One-rank gap pair matchups (55 vs 44, 66 vs 55, TT vs 99, JJ vs TT) all have very similar equity profiles: the favourite wins approximately 81–82% and the underdog wins 16–17%. The universal pattern: the lower pair has 2 set outs, which produce roughly 10–11% equity contribution, with secondary equity making up the remaining 5–7%. 55 vs 44 at 81.5% is essentially identical to 66 vs 55 at 81.5% — the one-rank gap structure produces consistent equity regardless of which specific adjacent ranks are involved. The exception is the wheel board scenario: 55 and 44 both connect to A-2-3-4-5 in ways that 66/55 or TT/99 do not.
What are the implied odds for 44 set-mining vs 55?
44 set-mining vs 55 requires approximately 7:1 implied odds — the effective stack should be at least 7× the preflop raise amount for the call to be clearly profitable. 44 flops a set ~11.8% of the time; when it does, 44 wins approximately 88% from that point. Against 55, which will bet strongly on low boards as an overpair, 44 can extract significant value post-flop. The unique consideration for 44 vs 55 specifically: on A-2-3-4 boards where 44 picks up a major draw without a set, 44 can gain equity through the straight draw path — this slightly improves 44's EV in deep-stack situations compared to pure set-mining calculations.
How does 55 vs 44 fit into the overall pair-vs-pair equity table?
55 vs 44 (81.5%) is at the lower end of the pair domination spectrum, consistent with adjacent low-pair matchups. It matches TT vs 99 (81.5%) and 66 vs 55 (81.5%) exactly — all adjacent one-rank pair matchups produce 81.5% for the favourite. The 1.7% tie rate in 55 vs 44 is stable. The full low-pair reference table shows that as the gap between pairs increases (55 vs 44 → 55 vs 33 → 55 vs 22), the favourite's equity increases by 0.1–0.3 percentage points because more distant lower pairs have less secondary board equity.
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