KK vs 87s: Odds & Interactive Calculator
| Hand | Win | Tie | Equity |
|---|---|---|---|
| KK (Pocket Kings) | 77.8% | 0.4% | 77.9% |
| 87s (Eight-Seven Suited) | 21.9% | 0.4% | 22.1% |
How KK vs 87s unfolds by street
Pocket Kings (KK) is still ahead on 93% of flops against 87s, and the lead survives to the turn on 87%. 87s takes the lead on the other 7% of flops. These figures come from full board enumeration, not a simulation.
| Street | KK still ahead | 87s flipped the lead |
|---|---|---|
| Flop | 93% | 7% |
| Turn | 87% | 13% |
KK vs 87s pits a made pair against the best drawing shape in hold'em: KK wins 77.8%, 87s wins 21.9%, and 0.4% of boards chop. Suited connectors are the single best class for cracking an overpair — two live ranks, straight potential off the Eight-Seven connectedness, and a flush draw stack up to about 1 win in 5, well above what an offsuit holding manages here.
At a final table the raw 77.9% / 22.1% split is only half the story — ICM bends it. As the 22.1% underdog, 87s pays an extra survival premium, so the chip-EV "close enough" call can be a clear ICM fold. The pure equity sets the floor; the payout ladder sets the real price.
With the overpair, bet big and bet now — 87s has the draws to make your life miserable on later streets, so charging it the maximum before the flush and straight cards arrive is the entire plan. From the connectors' side, the 21.9% equity is real but realized best in position with the chance to fold out the pair, not by stacking off blind.
KK vs 87s FAQ
Who wins KK vs 87s preflop?
KK (Pocket Kings) is the favorite, winning 77.8% of all runouts, while 87s (Eight-Seven Suited) wins 21.9%. The remaining 0.4% are split pots. Counting splits as half, KK's preflop equity is 77.9%.
Does the KK vs 87s probability change all-in preflop?
No. Once both hands are all-in preflop the odds are set by the cards alone — position, stack size and who bet first change nothing. The only thing that moves the number is suits: KK's equity runs from 77.4% to 78.5% depending on how many suits the two hands share, which is why different sites quote slightly different figures. It does change once board cards are dealt (KK leads on 93% of flops) and in multiway pots, where every extra caller takes equity from both hands.
Are suited connectors good against KK?
Better than almost any other underdog: 87s holds 22.1% equity against KK thanks to its straight and flush potential — roughly 1 win in 5. That equity is realized best with position and fold equity postflop, not by jamming all-in preflop where the overpair is a 3.6-to-1 favorite.
Does KK hold up against 87s after the flop?
KK is still ahead on 93% of flops and stays ahead through the turn on 87% of boards; 87s takes the lead on the other 7% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AA VS 54S · AA VS 87S · AA VS 98S · AA VS T9S · AA VS JTS · AA VS 75S
KK against a range
All-in against one known hand is the textbook case; at the table KK is usually up against a range. Exact equities, computed over every combo with card removal applied:
- KK vs calling station — 78.7% against 670 combos (50.5% of hands)
- KK vs BTN open — 77.7% against 586 combos (44.2% of hands)
- KK vs SB open — 77.2% against 534 combos (40.3% of hands)
- KK vs CO open — 76.7% against 366 combos (27.6% of hands)