KK vs 77 Odds: Pocket Kings vs Pocket Sevens
Last updated: May 27, 2026
Pocket Kings (KK) wins 82.1% of the time against Pocket Sevens (77) preflop. 77 wins 16.2% with ties at 1.7%. This is a domination matchup — KK holds two cards that rank far above 77's pair and is always an overpair regardless of what falls on the board. 77's only realistic winning path is flopping three sevens (11.8% of flops), after which it becomes approximately 88.6% favourite. Low pairs like 77 also have additional connected-board straight draw equity that makes boards like 5-6-8 or 6-7-8 particularly dangerous for KK.
The Exact Number: 82.1% vs 16.2%
KK's 65.9-point advantage over 77 places this at the higher end of the KK vs lower pair matrix. The 1.7% tie rate is standard for lower-pair matchups. Notably, 77's 16.2% win rate is slightly lower than 88's 16.5% vs KK — despite 77 having more low-board straight connectivity — because the lower rank of 77 means fewer of those straight boards produce complete straights in the full runout.
KK Wins
82.1%
77 Wins
16.2%
Tie
1.7%
77's 16.2% equity vs KK is almost entirely explained by set-out math. With 2 outs to a seven, 77 flops a set roughly 11.8% of the time. When 77 flops that set, it wins ~88.6% of hands, contributing approximately 10.5% equity. The remaining ~5.7% comes from straight draws on low connected boards (5-6-8, 6-7-9), runner-runner scenarios, and board-play ties.
Does the Suit Matter?
Suit combinations affect KK vs 77 by approximately 0.4 percentage points — the standard minor range seen across pair-vs-pair domination matchups. 77's primary equity driver (set outs) is suit-independent. The small suit effect comes from flush draw possibilities when 77 shares a suit with one of the kings, giving 77 a backdoor flush draw that occasionally becomes relevant on suited runouts.
Preflop equity by suit combination
Post-Flop: The Critical Board Textures
Post-flop equity in KK vs 77 follows a predictable pattern: any seven on the flop dramatically shifts equity to 77, any king locks in KK's top-set dominance, ace-high boards change nothing (KK remains overpair), and low connected boards (5-6-8) are 77's best non-set weapon. The K-7-x set-over-set scenario is the highest-drama flop in this matchup.
Equity given specific flops and runouts
KK vs All Lower Pairs — Complete Comparison
KK's equity versus various lower pairs is remarkably consistent, clustering between 81.6% and 82.2% across the entire range. This narrow 0.6-point spread reflects the structural sameness of all domination matchups: two set outs, no overcard equity, identical 11.8% set probability. The tiny differences arise from varying straight connectivity at different rank levels.
Notice that KK vs 77 (82.1%) is identical to KK vs 99 (82.1%) — the set-equity floor for lower pairs vs kings sits at almost exactly the same level regardless of whether the pair is 55, 66, 77, 88, 99, or TT. The structural reason is universal: all these pairs have the same 2 set outs and the same 11.8% set probability.
Where Does 77's 16.2% Come From?
77's equity vs KK is concentrated in set probability, with a secondary contribution from low-board straight draw equity — the distinctive feature of lower pairs that higher pairs lack in such abundance.
77 equity sources vs KK
- Flop a set of sevens (11.8%) × win from there (~88.6%)~10.5%
- Straight draws on low connected boards (5-6-8, 6-7-9)~3.3%
- Runner-runner quads or full house vs KK set~0.4%
- Board-play ties and miscellaneous runouts~2.0%
- Total 77 equity16.2%
Definitions
Frequently Asked Questions
What are the exact preflop odds of KK vs 77?
Pocket Kings (KK) win 82.1% of the time against Pocket Sevens (77) preflop. 77 wins 16.2% and ties account for 1.7%. This is a domination matchup — KK holds two cards that rank far above 77's pair, and 77 has only two set outs as its primary winning mechanism. KK's 82.1% is slightly higher than AA vs 77 (79.9%) because KK holds a clean overpair status on all board textures, including ace-high boards where AA still wins but with a marginally different equity structure.
How does 77 win against KK?
77's primary winning mechanism is flopping a set. With 2 outs in a 48-card deck after both hands are dealt, 77 flops a set approximately 11.8% of the time. When 77 flops a set, it becomes roughly 88.6% favourite to win. The remaining equity in 77's 16.2% comes from low connected boards where 77 picks up straight draw outs — a 5-6-8 flop gives 77 an open-ended straight draw that narrows KK's equity to 67.2% vs 32.8%, dramatically more dangerous than blank boards. On 6-7-9 or 5-7-8 boards, 77 can even flop a set AND a straight draw simultaneously, representing maximum danger for KK.
What is the most dangerous board for KK when facing 77?
The most dangerous board for KK vs 77 is a 5-6-8 or 6-7-8 flop. On 5-6-8, 77 gains an open-ended straight draw (any 4 or 9 completes the straight) without flopping a set, narrowing KK's equity from 82% to 67.2%. On 6-7-8, 77 flops a set AND has a complete open-ended straight draw (4 or 9) simultaneously — this represents maximum danger since 77 has both set equity (~88.6% win rate) and extra outs. Any 7-high flop (7-x-x) is individually the worst for KK since 77 becomes ~88.6% favourite. Connected low boards are 77's best non-set weapon against KK.
What happens in the set-over-set (K-7-x) scenario?
The K-7-x flop creates a set-over-set situation: KK has top set (three kings) and 77 has middle set (three sevens). From this point, KK wins 86.0% of the time — slightly better than the K-8-x set-over-set scenario (85.8%) because 77 as a lower set has marginally fewer boat-making possibilities. Both players will typically commit maximum chips since each has flopped a set. This is a pure cooler occurring roughly 0.9% of all flops in this matchup — less than 1 in 100 hands, but producing one of poker's most expensive and dramatic situations.
How does KK vs 77 compare to AA vs 77?
KK wins 82.1% vs 77 while AA wins 79.9% vs 77 — KK is 2.2 percentage points stronger. The structural reason is straightforward: KK is an overpair on ALL board textures including ace-high boards, while AA's equity structure involves slightly different calculations on ace-heavy boards. Against 77 specifically, an ace on the board does nothing to change either hand's status (77 remains underpair regardless), but the aggregate equity calculation across all possible runouts gives KK a marginally cleaner advantage. In practical terms, both are massive favourites and the strategic approach is identical.
How should KK be played post-flop vs 77 without a set?
KK should bet aggressively for value on almost all blank boards. On 7-free, low-connected boards where 77 has no direct straight draw (e.g., K-Q-2, K-J-3, A-T-4), KK wins 93%+ after the turn and should extract maximum value. On connected low boards like 5-6-8 where 77 has picked up OESD equity, KK should still bet for value but be aware that approximately 1 in 3 turns and rivers could complete 77's straight. The strategic error to avoid: slow-playing KK on blank boards and accidentally giving 77 free cards to catch set outs or backdoor equity.
Should 77 call a 3-bet knowing KK is in the opponent's range?
Against a 3-bet range that includes KK, AA, QQ, AK, and sometimes JJ/TT, 77 is typically a call at the right stack depth using set-mining implied odds (roughly 10:1 on the preflop investment). Against a narrow 3-bet range that is heavily weighted toward KK+ and AK, 77 becomes a marginal call or fold. In tournaments near the bubble, 77 should fold to a 3-bet from tight players because ICM pressure makes the variance of set-mining unprofitable even when you hit. In cash games with 100+ big blinds deep, 77 can profitably set-mine vs KK if you expect to stack off when you flop a set.
Related Guides
Run KK vs 77 on any flop — see live equity
RiverOdds shows how set-over-set boards and connected low runouts shift equity in real time.
Open RiverOdds Calculator →