--- title: "ATs vs T8s: preflop equity" url: "https://georgelipoker.com/equity/ats-vs-t8s.md" canonical_url: "https://georgelipoker.com/equity/ats-vs-t8s" last_updated: "2026-10-23" type: "reference" summary: "ATs is a big favorite over T8s before the flop: 68.92% to 31.09% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/ats-vs-t9o.md", "https://georgelipoker.com/equity/ats-vs-98s.md", "https://georgelipoker.com/equity/aqo-vs-t8s.md"] --- # ATs vs T8s: preflop equity ATs is a big favorite over T8s before the flop: 68.92% to 31.09% equity, counted exactly over every board, with the split by flop type and suit. Before any board card is dealt, ATs holds 68.92% equity against T8s, which leaves T8s with 31.08%. ## ATs against T8s: the numbers **Exact preflop results for ATs against T8s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | ATs | 67.883 | 2.063 | 30.054 | 68.915 | | T8s | 30.054 | 2.063 | 67.883 | 31.085 | ATs and T8s are both suited hands. Sharing a rank is the signature of a dominated hand, since the weaker hand is usually out-kicked when the shared rank shows up. A lead of 37.84 points is large but not decisive: T8s still takes about 300 of every 1,000 deals. Ties are 2.06% of the outcomes here; each tied board gives both hands half the pot. Place 13 of 169 belongs to ATs and place 73 belongs to T8s in the ranking against a random hand. **Boards behind the percentages: 20,547,648 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | ATs | 13,948,000 | 424,000 | 6,175,000 | | T8s | 6,175,000 | 424,000 | 13,948,000 | 12 specific deals times 1,712,304 boards gives the exact total. The won, tied and lost counts are approximations from the five-decimal percentages, rounded to the nearest thousand. **ATs against T8s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | ATs | 2.217 | 1.473 | 3.327 | 0.451 | | T8s | 0.451 | 3.327 | 1.473 | 2.217 | In the last column, a pot-to-call ratio at or above the figure makes a call break even or better at this equity. ## Who is ahead on which flops Break the boards down by their first three cards and ATs is strongest on rainbow flops topped by a ten or better (73.89%) and weakest on low rainbow flops (nine high or lower) (55.97%). ATs stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **ATs against T8s by flop texture, in percent** | Flop | Share of flops | ATs wins | Ties | T8s wins | ATs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 72.983 | 1.811 | 25.206 | 73.889 | | Rainbow, nine or lower | 7.042 | 54.641 | 2.659 | 42.700 | 55.971 | | Two-tone | 46.543 | 66.535 | 1.758 | 31.707 | 67.414 | | Monotone | 5.215 | 60.483 | 4.196 | 35.321 | 62.581 | | Paired | 17.333 | 72.084 | 2.349 | 25.567 | 73.258 | Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank. ## Compared with a random hand How much does the opponent matter? Compared with its random-hand 64.60%, ATs changes by +4.32 points, and T8s, from 52.33%, by -21.25. **ATs and T8s here compared with each against a random hand, in percent** | Case | Equity here | Against a random hand | Change in points | Times the random-hand equity | | --- | --- | --- | --- | --- | | ATs, all flops | 68.915 | 64.602 | +4.313 | 1.06676 | | ATs, rainbow, ten or higher | 73.889 | 64.602 | +9.287 | 1.14376 | | ATs, rainbow, nine or lower | 55.971 | 64.602 | -8.631 | 0.86640 | | ATs, two-tone | 67.414 | 64.602 | +2.812 | 1.04353 | | ATs, monotone | 62.581 | 64.602 | -2.021 | 0.96872 | | ATs, paired | 73.258 | 64.602 | +8.656 | 1.13399 | | T8s, all flops | 31.085 | 52.334 | -21.249 | 0.59397 | | T8s, rainbow, ten or higher | 26.111 | 52.334 | -26.223 | 0.49893 | | T8s, rainbow, nine or lower | 44.029 | 52.334 | -8.305 | 0.84131 | | T8s, two-tone | 32.586 | 52.334 | -19.748 | 0.62265 | | T8s, monotone | 37.419 | 52.334 | -14.915 | 0.71500 | | T8s, paired | 26.742 | 52.334 | -25.592 | 0.51099 | ## Does a shared suit matter? Every legal deal of ATs against T8s leaves the hands with no suit in common, so the suit split does not apply here. **ATs against T8s by suit overlap, in percent** | Deals | Specific deals | Share of deals | ATs wins | Ties | T8s wins | ATs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 67.883 | 2.063 | 30.054 | 68.915 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 12 are ATs in one seat and T8s in the other (0.0007%); with the seats swapped too, 24 (0.0015%). ## A worked example Put $100 each into a $200 pot and deal every board once: ATs averages $137.84 back, ahead of its $100 by $37.84, while T8s averages $62.16, short of its $100 by $37.84. A thousand deals look like this: ATs takes 679, T8s takes 300, 21 are ties. ## The same matchup from the other side T8s against ATs adds nothing new: it is 31.08% for T8s and 68.92% for ATs, the same figures reversed. ## Keep exploring The calculator link fills in AsTs against Th8h, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength. - [Open AsTs against Th8h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsTs&p2=Th8h) - [ATs combos](https://georgelipoker.com/combos/ats.md) - [T8s combos](https://georgelipoker.com/combos/t8s.md) - [ATs vs T9o](https://georgelipoker.com/equity/ats-vs-t9o.md) - [ATs vs 98s](https://georgelipoker.com/equity/ats-vs-98s.md) - [AQo vs T8s](https://georgelipoker.com/equity/aqo-vs-t8s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed All 1,712,304 five-card boards are dealt for every suit pattern among the 12 specific deals of ATs against T8s, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [ATs vs T9o: preflop equity](https://georgelipoker.com/equity/ats-vs-t9o.md) - [ATs vs 98s: preflop equity](https://georgelipoker.com/equity/ats-vs-98s.md) - [AQo vs T8s: preflop equity](https://georgelipoker.com/equity/aqo-vs-t8s.md)