Updated 2026-07-22 · 8 decks · S17 · DAS · methodology
9,9 (pair of 9s) vs dealer 2: the verdict
The math is in: split. Two hands of 9 beat one 18 against a dealer 2 — split them.
The numbers
| Action | Win | Push | Lose | EV per $1 |
|---|---|---|---|---|
| Split* | 49.7% | 8.0% | 42.3% | +0.185 |
| Stand | 49.3% | 13.5% | 37.2% | +0.122 |
| Hit | 17.4% | 2.9% | 79.7% | −0.622 |
| Double | 17.4% | 2.9% | 79.7% | −1.245 |
* win/push/lose shown per split hand; EV covers both hands per one initial bet.
Why split is correct
Played as a single total, this hand is weak against a 2. Split, each new hand starting from 9 wins 49.7% — enough that two of them (EV +0.185 across both) beat the best single-hand line at +0.122.
For context, a dealer 2 finishes on 17–20 about 52.8% of the time, on 21 11.8%, and busts 35.4%. Those dealer outcomes are the same no matter what you hold — the whole game is choosing the action whose distribution fits them best.
What the mistake costs
Choosing stand instead of split costs about $157 per 100 such hands at $25 a hand (−0.063 EV per dollar). The genuinely expensive error here is double: −1.430 per dollar, or roughly $3574 per 100 hands at the same stakes.
Does the rule set change it?
No — split holds across every common configuration: Vegas Strip, Atlantic City with late surrender, H17 games and European no-hole-card tables all agree here.
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9,9 against other dealer cards:
Other key hands vs a dealer 2: