AJ vs A5s: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AJ (Ace-Jack) | 63.6% | 7.5% | 67.4% |
| A5s (Ace-Five Suited) | 28.9% | 7.5% | 32.6% |
Suited vs offsuit: AJ
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| AJs | 64.8% | 7.2% | 68.4% |
| AJo | 63.2% | 7.6% | 67.0% |
How AJ vs A5s unfolds by street
Ace-Jack (AJ) is still ahead on 80% of flops against A5s, and the lead survives to the turn on 77%. A5s takes the lead on the other 20% of flops. These figures come from full board enumeration, not a simulation.
| Street | AJ still ahead | A5s flipped the lead |
|---|---|---|
| Flop | 80% | 20% |
| Turn | 77% | 23% |
Share a card and you get a kicker problem — that's AJ vs A5s: AJ wins 63.6%, A5s wins 28.9%, and 7.5% of boards chop. With the shared rank gutting its outs, A5s is a 2.2-to-1 underdog, and 7.5% of runouts split outright when both play the common card.
Think in variance terms: 67.4% equity means AJ loses this all-in nearly 33 times in 100, so even a "dominant" spot is a coin you'll see come up tails plenty. Getting it in as the 67.4% favorite is correct every time; the 32.6% that goes the other way is math, not a misplay.
The lesson of AJ vs A5s is kicker discipline: A5s is the hand that quietly costs people stacks because it's too strong to fold and too dominated to win. If you hold AJ, get value while you're ahead; if you hold the dominated side, this is the exact spot to find a preflop fold against a tight range.
AJ vs A5s FAQ
Who wins AJ vs A5s preflop?
AJ (Ace-Jack) is the favorite, winning 63.6% of all runouts, while A5s (Ace-Five Suited) wins 28.9%. The remaining 7.5% are split pots. Counting splits as half, AJ's preflop equity is 67.4%.
How often does A5s beat AJ?
A5s wins 28.9% of the time all-in preflop against AJ — roughly 1 in 3 — so it needs good pot odds or fold equity to get the money in profitably.
Why is A5s so bad against AJ?
Because they share a card, A5s is drawing to roughly three outs and chops 7.5% of the time — it wins only about 1 in 3. That's the danger of a dominated hand: too strong to fold, too far behind to outdraw, which is how kicker problems quietly cost full stacks.
Does AJ hold up against A5s after the flop?
AJ is still ahead on 80% of flops and stays ahead through the turn on 77% of boards; A5s takes the lead on the other 20% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AK VS A2S · AK VS A3S · AK VS A4S · AK VS A5S · AK VS A6S · AK VS A7S