Single Zero: Roulette Wheel Configuration Explained
Single Zero refers to a roulette wheel with 37 pockets numbered 0 through 36, characteristic of European and French roulette variants where the house edge is minimised compared to double-zero wheels. This configuration eliminates the additional 00 pocket found in American roulette, resulting in better odds for players. The single zero pocket gives the house its edge, typically 2.70% on all bets except specific rules like La Partage or En Prison. For Canadian players, single zero tables dominate licensed online casinos and represent the standard for fair roulette play under provincial regulations. Understanding this term helps players distinguish favourable games from higher-edge variants.
Wheel Configuration and Mathematics
The single zero wheel contains 37 equally spaced pockets: one green zero and 36 numbered pockets alternating red and black. This setup yields a house edge of 2.70% on most bets, calculated as (1/37) or approximately 2.70%. Straight-up bets pay 35:1, but the zero ensures long-term casino advantage. In contrast, double zero wheels double this edge to 5.26%. Licensed operators must clearly display table limits and RTP, often 97.30% for single zero European roulette.
Game Variants and Special Rules
European roulette uses standard single zero without special rules, while French roulette adds La Partage (half even-money bet returned on zero) and En Prison (even-money bets locked for next spin), reducing edge to 1.35% on those bets. Online live dealer single zero tables typically stream in HD from European studios with minimums from $1 CAD. Players benefit from lower volatility and predictable mathematics across inside bets like straight-up or six-line, and outside bets like dozens or columns.
Practical Relevance for Players
Single zero tables appeal to bankroll-conscious players due to superior odds over double zero. In Canada, regulated platforms prioritise these for transparency under iGaming Ontario and AGCO standards. Session trackers show extended playtime versus American variants. Responsible play involves recognising fixed edge regardless of streaks, setting loss limits, and selecting tables with clear RTP disclosure.
Single Zero (European) | Double Zero (American) |
|---|---|
| 37 pockets, 2.70% house edge | 38 pockets, 5.26% house edge |
| Standard in licensed casinos | Higher volatility, shorter sessions |
| La Partage reduces edge to 1.35% | No special rules, full zero loss |
| 97.30% average RTP | 94.74% average RTP |
| Preferred for long-term play | Higher risk per spin |
