Updated 2026-07-22 · 8 decks · S17 · DAS · methodology
5,5 (pair of 5s) vs dealer 2: the verdict
Basic strategy says double. Against a dealer 2, this hand is strong enough to put double the money on the table.
The numbers
| Action | Win | Push | Lose | EV per $1 |
|---|---|---|---|---|
| Double | 55.1% | 7.8% | 37.1% | +0.359 |
| Hit | 55.0% | 8.2% | 36.8% | +0.182 |
| Split* | 41.7% | 3.8% | 54.6% | −0.194 |
| Stand | 35.4% | 0.0% | 64.6% | −0.293 |
* win/push/lose shown per split hand; EV covers both hands per one initial bet.
Why double is correct
Doubling wins almost exactly as often as hitting (55.1% vs 55.0%) — the difference is you have twice the money riding on a favorable spot. Against a dealer 2 (bust chance 35.4%), that extra bet is the whole point: EV +0.359 doubled beats +0.182 hit.
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 hit instead of double costs about $441 per 100 such hands at $25 a hand (−0.176 EV per dollar). The genuinely expensive error here is stand: −0.652 per dollar, or roughly $1629 per 100 hands at the same stakes.
Does the rule set change it?
No — double 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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5,5 against other dealer cards:
Other key hands vs a dealer 2: