AKs vs AKo
Ace-king suited against ace-king offsuit, all in before the flop. The same two ranks on both sides. All that is left is the suit — and the split pot.
The numbers
AKs
ace-king suited
52.5%
equity
AKo
ace-king offsuit
47.5%
equity
| Outcome | Share of boards |
|---|---|
| AKs wins | 7.2% |
| AKo wins | 2.2% |
| Split pot | 90.7% |
Exact, not simulated. AKs means ace-king suited and AKo means ace-king offsuit: 24 legal ways to deal the two hands, and every one of the 1,712,304 possible five-card boards dealt for each — 41,095,296 board-and-hand combinations in total, each one scored by the same evaluator the calculator uses. Combinations that are the same hand with the suits renamed were counted once and weighted by how many they stand for: 1 distinct suit pattern stand in for all 24, which is the same answer for 24 times less work.
Why it comes out this way
Both players hold the same two ranks, so neither can pair up without the other pairing up as well. Every board that makes a pair, two pair or three of a kind makes it for both hands at once — which is why the pot is split 90.7% of the time, far more often than in any other matchup on this site.
The only thing that separates them is the suit. Ace-king suited wins 7.2%, because its two cards can make a flush together. The offsuit hand wins 2.2% — it holds two suits rather than one, which pays off on the boards that bring four cards of its second suit.
So the edge is real but small: 5.0 percentage points, all of it flushes.
Open it in the calculator
The link below deals one typical version of this matchup — Aof spadesKof spades against Aof heartsKof diamonds — into the calculator, with both hands set and the board empty. Add community cards one at a time to watch the equity move, or change a card to see how much the suits are worth.