ATo vs A5s: preflop equity

ATo against A5s: the numbers

ATo and A5s are an offsuit hand and a suited hand, in that order. Because the hands share one rank, the one with the higher kicker is ahead when that rank pairs and the other hand is mostly drawing.

A lead of 32.22 points is large but not decisive: A5s still takes about 288 of every 1,000 deals. Ties are 10.22% of the outcomes here; each tied board gives both hands half the pot.

In the ranking of all 169 starting hands, ATo is number 19 and A5s is number 30.

36 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.

The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call.

Who is ahead on which flops

Split by what the flop looks like, ATo peaks at 73.34% on rainbow flops topped by a ten or better and bottoms out at 54.33% on low rainbow flops (nine high or lower). ATo stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank.

Compared with a random hand

How much does the opponent matter? Compared with its random-hand 62.72%, ATo changes by +3.39 points, and A5s, from 59.92%, by -26.03.

Does a shared suit matter?

When the hands share a suit, ATo holds 66.91%; when they do not, it holds 65.71%. ATo does better with a shared suit, by 1.20 points.

How often this matchup comes up

ATo against A5s is made up of 36 specific-card matchups in one seat order, 0.0022% of the 1,624,350 ordered deals, and 72 counting both seat orders, 0.0044%.

A worked example

Worked example: both players commit $100, so $200 sits in the middle. Over every board, ATo's average share is $132.22 (a gain of $32.22) and A5s' is $67.78 (a loss of $32.22).

A thousand deals look like this: ATo takes 610, A5s takes 288, 102 are ties.

The same matchup from the other side

Read it from the other side: A5s against ATo is the same matchup with the numbers swapped, so A5s holds 33.89% and ATo holds 66.11%. That address sends you back to this page.

Keep exploring

Try AsTh against Ad5d in the calculator: the hands share no suit, and every card can be changed. The links after it are the closest matchups in the ranking.

• Open AsTh against Ad5d in the equity calculator
• ATo combos
• A5s combos
• ATo vs A6s
• ATo vs KTo
• KJs vs A5s
• All hand matchups