T9s vs AA
Ten-nine suited against a pair of aces, all in before the flop. Suited connectors against aces — how much the straights and flushes are really worth.
The numbers
T9s
ten-nine suited
22.2%
equity
AA
a pair of aces
77.8%
equity
| Outcome | Share of boards |
|---|---|
| T9s wins | 22.0% |
| AA wins | 77.6% |
| Split pot | 0.4% |
Exact, not simulated. T9s means ten-nine suited and AA means a pair of aces: 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: 2 distinct suit patterns stand in for all 24, which is the same answer for 12 times less work.
Why it comes out this way
The pair of aces is ahead and both of ten-nine's cards are lower than the pair, so pairing up is usually not enough — a ten or a nine on the board still leaves ten-nine behind the pair of aces.
Ten-nine still wins 22.0% of the time, and almost all of it comes from straights, flushes and two pair rather than from pairing one card. Its two ranks sit next to each other, which gives them four different straights to aim at.
Ten-nine being suited matters here: two cards of the same suit make a flush far more often than two of different suits, and a flush beats any pair. The same two ranks offsuit win only 18.2%, so the shared suit is worth 3.8 percentage points.
The pot is split 0.4% of the time.
Open it in the calculator
The link below deals one typical version of this matchup — 10of spades9of spades against Aof spadesAof hearts — 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.