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ATs vs 77 equity

Preflop, ATs beats 77 with exact equity 47.91% vs 52.09%: ATs wins 47.72%, 77 wins 51.89%, ties 0.39%. Computed by exhaustively enumerating all 10,273,824 deals.

ATs Win47.72%
77 Win51.89%
Tie0.39%
ATs Equity (win + tie/2)47.91%
77 Equity (win + tie/2)52.09%
Boards enumerated10,273,824
Suit combinations6
Losing frequencyATs loses 1 in 1.9

Note: class-average values. Specific suit combinations (e.g. shared suits) shift the numbers by a few tenths of a percent.

FAQ

Who wins more often, ATs or 77?

77 is ahead: ATs has 47.91% equity vs 52.09% (exact enumeration).

How often do ATs vs 77 tie?

Ties occur 0.39% of the time (40,149 of 10,273,824 outcomes).

Are these numbers simulated?

No. All 10,273,824 board combinations are exhaustively enumerated — mathematically exact and reproducible.

Figures from app/data/matchup-matrix (exhaustive engine scripts/gen-matchup-matrix.mjs, cross-validated against lib/poker-equity.ts)

Cite this page: Pailiku, “ATs vs 77 equity”, pailiku.com/matchups/ats-vs-77 (2026).