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Seven2Offsuit

Preflop matchups

55 vs KQo: preflop equity

55 against KQo is close to a coin flip.

55

vs

KQo

55 wins

52.8%

Tie

0.6%

KQo wins

46.7%

55 has 53.1% equity, which counts a tie as half a win. The numbers are exact: every one of the 1,712,304 possible boards is counted for each suit combination, not simulated. Suits are shown as examples; the result is averaged over every KQo combination that doesn't share a card with 55.

Try it on a board in the Odds Lab

Questions

Who wins more often, 55 or KQo?
55 against KQo is close to a coin flip. All in before the flop, 55 wins 52.8% of the time, KQo wins 46.7% and they tie 0.6%.
What is 55's equity against KQo?
53.1%. Equity counts a tie as half a win, so it is the share of the pot 55 takes on average.
Are these odds exact?
Yes. Every one of the 1,712,304 possible five-card boards is counted for each suit combination, so there is no simulation error.