- The European sequence alternates colour and balances high/low and odd/even.
- On the American wheel, 0 and 00 sit directly opposite each other.
- Call bets (Voisins, Tiers, Orphelins) cover wheel sectors at the normal edge.
- Modern wheels are monitored, so wheel bias is not a practical edge.
The numbers on a roulette wheel are not in numerical order, and the arrangement is not random either. Both the European and American sequences were designed in the 19th century to spread red and black, odd and even, and high and low as evenly as possible around the rim. Knowing the layout does not help you predict the ball, but it explains the call bets you will see on every live table and helps you spot a mis-set demo wheel from across the room.
European wheel sequence
Clockwise from zero: 0, 32, 15, 19, 4, 21, 2, 25, 17, 34, 6, 27, 13, 36, 11, 30, 8, 23, 10, 5, 24, 16, 33, 1, 20, 14, 31, 9, 22, 18, 29, 7, 28, 12, 35, 3, 26.
Properties: colours strictly alternate; adjacent numbers alternate high and low as far as possible; pairs of odd numbers alternate with pairs of even numbers. The numbers on either side of zero (32 and 26) are both high; the number directly opposite zero is 5.
American wheel sequence
Clockwise from zero: 0, 28, 9, 26, 30, 11, 7, 20, 32, 17, 5, 22, 34, 15, 3, 24, 36, 13, 1, 00, 27, 10, 25, 29, 12, 8, 19, 31, 18, 6, 21, 33, 16, 4, 23, 35, 14, 2.
The two zeros sit directly opposite each other, and consecutive numbers (1 and 2, 3 and 4 …) sit directly across the wheel from one another. Colours still alternate, but the odd/even distribution is less balanced than the European wheel.
The racetrack and call bets
Most European live tables show a "racetrack" — an oval with the numbers in wheel order — used for section bets:
| Call bet | Pockets | Chips | What it covers |
|---|---|---|---|
| Voisins du Zéro | 17 | 9 | 22 through 25 on the wheel, either side of zero |
| Tiers du Cylindre | 12 | 6 | 27 through 33, opposite zero |
| Orphelins | 8 | 5 | The two leftover slices (17-34-6 and 1-20-14-31-9) |
| Jeu Zéro | 7 | 4 | 12-35-3-26-0-32-15 |
| Neighbours | 5 | 5 | Any number plus two on each side |
Every call bet is a bundle of ordinary splits and straight-ups, so the house edge stays at 2.70%. They exist for convenience and for players who believe in wheel sectors.
Does layout knowledge give an edge?
On a fair wheel, no. Historically, biased wheels — worn frets, a tilted spindle — did produce sector advantages, and "wheel clockers" made money in the 1980s and 90s. Modern casino wheels are inspected and rotated, and online RNG wheels have no physical bias at all. Live-dealer wheels are physical but are monitored by the studio and replaced long before a bias could become exploitable.
Why our demos use the real sequence
Every free wheel on roulettewheel.ca is drawn with the correct sequence for its variant. It changes nothing about the odds, but a demo with the numbers in the wrong order is a small tell that nobody involved has stood next to a real table. Ours have.
Try it yourself
Every number in this guide can be checked on the site: spin the European and American demos side by side, run bets through the odds calculator, or test any system in the strategy simulator.
