The moment the ball drops, every bet on the layout resolves at once
Roulette looks slower than it is. For most of the spin, nothing is happening that requires your attention. Then the ball falls into a pocket, the dealer places a marker on the winning number, and in a few seconds every chip on the table is either collected or paid. Understanding that resolution is the whole game: you are not betting on a wheel, you are betting on which of 37 or 38 labelled pockets will hold the ball, and the payout for being right depends on how many numbers your bet covered.
The winning number is the pocket the ball rests in when the wheel stops. That is the only event that matters. The colour of the pocket, whether it is odd or even, and which section of the layout it sits in all matter because they determine which side bets win alongside the straight-up number bets.
How a round runs from buy-in to the next spin
You buy in at the table by placing cash on the felt; the dealer exchanges it for roulette chips. These are not the same as the chips used at other tables, and they have no value away from that wheel. You set your own chip value when you buy in, and the dealer marks it so the table knows what each of your chips is worth.
Betting stays open while the wheel is not spinning. You place chips directly on the layout, and you may keep placing them until the dealer announces that no more bets will be taken. On a physical table that announcement comes as the ball begins to lose speed. Once betting closes, you cannot touch your chips. If the ball has not dropped yet, your hand stays off the felt.
The dealer then calls the winning number, points to it, and places a marker, often called a dolly, on the layout. Losing bets are swept off the table first. Winning bets are paid next, and your original winning chips remain on the layout until you collect them. You may leave a winning bet in place for the next spin, but you are not required to, and the payout is yours whether you leave the original stake or not.
What each bet pays when the ball lands
Roulette payouts are fixed by the number of pockets a bet covers. A straight-up bet on a single number covers one pocket and pays more than a bet on red, which covers eighteen pockets. The payout is calculated as if the wheel had no zero, which is where the house edge comes from: the odds of winning are slightly worse than the payout suggests.
The table below compares the main bets on a European wheel, which has 37 pockets. The payout column is the amount you receive in addition to your original stake. An American wheel has 38 pockets because it adds a double zero, and that extra pocket changes the odds of every bet on the layout without changing the payouts.
| Bet | Pockets covered | Payout | What has to happen |
|---|---|---|---|
| Straight up | 1 | 35 to 1 | The ball lands on your exact number |
| Split | 2 | 17 to 1 | The ball lands on either of the two numbers |
| Street | 3 | 11 to 1 | The ball lands on any number in the row of three |
| Corner | 4 | 8 to 1 | The ball lands on any of the four numbers touching the corner |
| Six line | 6 | 5 to 1 | The ball lands on any number in the two adjacent rows |
| Dozen or column | 12 | 2 to 1 | The ball lands on any number in that group |
| Red, black, odd, even, 1-18, 19-36 | 18 | 1 to 1 | The ball lands on any pocket with that property |
When the ball lands on 0 on a European wheel, or 0 or 00 on an American wheel, every bet on red, black, odd, even, and the number ranges loses. The zero pockets are green for exactly this reason: they sit outside the even-money categories, and they are the house's margin on those bets. A straight-up bet on zero itself wins like any other single number.
Some tables soften the zero with a rule; others do not
On many European tables, a rule called la partage or en prison applies to even-money bets when the ball lands on zero. Under la partage, you receive half of an even-money stake back immediately. Under en prison, the stake stays on the table, imprisoned for the next spin, and is returned if the next spin wins, or lost if it does not. Both rules reduce the cost of the zero for even-money bettors.
An American table with a double zero rarely offers either rule. The second zero pocket is enough to change the arithmetic on every bet, and the table layout will state whether any zero rule applies. Before you sit down, the printed layout and the posted table rules are the two places that tell you which wheel you are playing and whether the zero is softened.
The decision you control is coverage, not the outcome
Every roulette bet is a choice about how many pockets you cover and how much you are paid when one of them hits. A straight-up bet pays the most and wins the least often. An even-money bet wins close to half the time on a European wheel and pays the same amount you staked. Neither choice changes the long-run rate at which the game keeps its edge; it changes the shape of your session.
That is the useful way to read the payout table above. If you place one chip on a single number, you are buying a rare, large payout. If you place one chip on red, you are buying a frequent, small payout. The wheel does not know which you chose, and no pattern of moving between the two changes what the zero pockets take over time.
Where new players lose money through procedure, not through the wheel
The first procedural mistake is touching chips after betting closes. The dealer will call it, and any dispute about where a chip was placed is resolved against a player who is still handling chips. Decide before the ball slows down, and then keep your hands off the layout.
The second is misreading the chip value. Roulette chips are not marked with a printed denomination in the way cash chips are, and a stack that looks small can represent a much larger amount if the table minimum is high. Confirm your chip value when you buy in, and do not assume the colour means the same thing it meant at another table.
The third is betting the zero as an afterthought. A straight-up zero bet wins rarely, and when it does, the payout is the same as any other single number. It is not a hedge against losing even-money bets; it is a separate bet with its own low probability and its own house edge. If you want to cover the zero, do it as a deliberate part of your coverage decision, not as a reaction to a run of red or black.
FAQ
What happens if the ball lands on 0 or 00?
The zero pockets are green, and they win for anyone who bet on them directly. Even-money bets on red, black, odd, even, and the number ranges lose, unless the table offers a rule such as la partage or en prison, which returns part or all of the stake under stated conditions.
Do I get my original bet back when I win?
Yes. The payout is in addition to the original stake. A straight-up win on a single number pays 35 to 1, so you receive 35 chips in winnings and keep the chip you placed, for a total of 36 chips returned to you.
Does the previous spin affect what happens on the next one?
No. Each spin is an independent event on a wheel with the same pockets in the same positions. A number that has not appeared for many spins is not more likely to appear next, and a number that just hit is not less likely to hit again.
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This article is general information about how these mechanics work. It is not legal advice and not a recommendation to gamble or to use any particular operator. Availability and legality differ by jurisdiction — check the rules that apply where you are.