TT vs ATs: preflop equity

Counting every board, the equity split is 65.20% for TT and 34.80% for ATs, so TT leads by 30.40 points.

TT

65.20%

Wins 64.16%, ties 2.08%

ATs

34.80%

Wins 33.76%, ties 2.08%

Equity counts a tie as half a win. Exact over every board.

TT against ATs: the numbers

Exact preflop results for TT against ATs, in percent
HandWinsTiesLosesEquity
TT64.1612.07633.76365.199
ATs33.7632.07664.16134.801

One side is a pocket pair, the other is a suited hand. The pair already holds one of the other hand's ranks, and that overlap cuts down the cards the other hand can pair with.

That is a clear edge, 65.20% to 34.80%, but ATs still wins often enough that one hand proves nothing. Ties are 2.08% of the outcomes here; each tied board gives both hands half the pot.

By strength against a random hand, TT holds place 5 of 169 and ATs holds place 13.

Boards behind the percentages: 20,547,648 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
TT13,184,000427,0006,938,000
ATs6,938,000427,00013,184,000

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.

TT against ATs read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
TT1.8731.5592.9620.534
ATs0.5342.9621.5591.873

The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity.

Who is ahead on which flops

By flop texture, TT's equity runs from 60.93% on monotone flops up to 80.84% on low rainbow flops (nine high or lower). TT stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

TT against ATs by flop texture, in percent
FlopShare of flopsTT winsTiesATs winsTT equity
Rainbow, ten or higher23.01160.0812.09737.82261.130
Rainbow, nine or lower7.77179.0983.48417.41880.840
Two-tone46.23661.6762.20536.11962.778
Monotone5.15159.4852.89537.62060.933
Paired17.83170.7120.86228.42671.143

A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank.

Compared with a random hand

Relative to a random opponent, TT changes by -9.81 points (baseline 75.01%) and ATs by -29.80 points (baseline 64.60%).

TT and ATs here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
TT, all flops65.19975.012-9.8130.86918
TT, rainbow, ten or higher61.13075.012-13.8820.81494
TT, rainbow, nine or lower80.84075.012+5.8281.07769
TT, two-tone62.77875.012-12.2340.83691
TT, monotone60.93375.012-14.0790.81231
TT, paired71.14375.012-3.8690.94842
ATs, all flops34.80164.602-29.8010.53870
ATs, rainbow, ten or higher38.87064.602-25.7320.60168
ATs, rainbow, nine or lower19.16064.602-45.4420.29659
ATs, two-tone37.22264.602-27.3800.57617
ATs, monotone39.06764.602-25.5350.60473
ATs, paired28.85764.602-35.7450.44669

Does a shared suit matter?

TT and ATs never overlap in suit in a legal deal, so the whole matchup sits in the no-shared-suit row.

TT against ATs by suit overlap, in percent
DealsSpecific dealsShare of dealsTT winsTiesATs winsTT equity
Share a suit00.00not possiblenot possiblenot possiblenot possible
No shared suit12100.0064.1612.07633.76365.199

How often this matchup comes up

Out of 1,624,350 ways to deal two seats two cards each, 12 are TT in one seat and ATs in the other (0.0007%); with the seats swapped too, 24 (0.0015%).

A worked example

Try it with money: two players each put in $100 and the whole board runs out every possible way. TT averages $130.40 from the $200, up $30.40; ATs averages $69.60, down $30.40.

Over a long run, 1,000 deals split into about 641 for TT, 338 for ATs and 21 tied.

The same matchup from the other side

Swap the hands and you get ATs with 34.80% against TT with 65.20%. We keep one page per matchup, with the better-ranked hand first.

TsTh against AdTd is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength.

How this was computed

We counted every case. Each suit pattern of the 12 specific TT against ATs deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops.

Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used.

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