Annabel Cavendish, editor, in a private London casino room

Inside, outside, and the call bets only European tables run.

Inside and outside bets

Annabel Cavendish
Annabel Cavendish
Editor · 14 May 2026

Inside Bets: The Numbered Grid

Let's walk the layout systematically, because there's one piece of information buried in here that I consider genuinely essential.

A straight-up bet covers one number. It pays 35 to 1 on a European wheel. A split covers two adjacent numbers and pays 17 to 1. A street covers three numbers in a row and pays 11 to 1. A corner covers four numbers sharing a single point and pays 8 to 1. A six-line covers two adjacent streets, six numbers, and pays 5 to 1. Columns and dozens cover 12 numbers each and pay 2 to 1.

Here is the thing I need you to hear clearly. On a European single-zero wheel, every single one of those bets carries exactly 2.703% house edge. Not approximately. Exactly. According to our roulette sector analysis, this is an algebraic identity in the payout structure: the formula (36-K)/K where K is the number of covered pockets always resolves to -1/37 after subtracting the cost of the missing pocket. The casino always withholds one thirty-seventh of everything wagered, regardless of how you spread your chips.

Beginners are told to bet outside bets because they are "safer." That's true in one specific sense: outside bets have lower variance, meaning the swings are smaller. But you are not getting better odds on the house. The edge is identical.

Outside Bets: What "Even-Money" Actually Means

The even-money outside bets are red/black, odd/even, and high/low (1-18 and 19-36). Each covers 18 of 37 numbers and pays 1 to 1. The edge is 2.703%. The standard deviation per spin is approximately 0.999 units, compared to 5.84 units for a straight-up bet. Same expected loss. About six times less volatility.

Columns and dozens cover 12 numbers each and pay 2 to 1. Same 2.703% edge. Standard deviation approximately 1.45 units per unit bet.

The only bets where outside genuinely outperforms inside on expected value are even-money bets at a French table with La Partage in play. There, even-money bets drop to 1.351% while every inside bet remains at 2.703%. We cover that in the La Partage lesson. Without La Partage, the advice to "stick to outside bets" is about risk preference, not edge. Make that choice knowing what it is.

The Racetrack: A Better Interface, Not a Better Edge

At European and French tables, you'll usually find a separate betting area called the racetrack, or in French, la piste. Its numbers run in wheel order rather than grid order, and it exists specifically for placing sector bets: wagers on adjacent sections of the physical wheel rather than the layout grid.

The four standard sector bets are:

Voisins du Zero (Neighbours of Zero): Covers 17 numbers across the arc from 22 to 25 on the wheel. Uses nine chips: two on the 0-2-3 trio, two on the 22-26-28-29 corner, and one each on five splits covering the remaining numbers.

Tiers du Cylindre (Thirds of the Cylinder): Covers 12 numbers on the opposite arc, from 27 to 33, with six chips on six splits: 5-8, 10-11, 13-16, 23-24, 27-30, 33-36.

Orphelins (Orphans): Covers the eight remaining numbers in two disconnected arcs using five chips: a straight-up on 1, plus splits on 6-9, 14-17, 17-20, and 31-34.

Jeu Zero (Zero Game): Covers seven numbers close to zero with four chips: splits on 0-3, 12-15, 32-35, and a straight-up on 26.

According to the full chip placement breakdown at our analysis, all four carry 2.703% house edge on a European wheel. They are a convenient interface, not an advantage.

Voisins, Tiers, and Orphelins between them cover all 37 numbers on a European wheel with no overlap. The geometric division mirrors the physical wheel: Voisins sits on the zero side, Tiers on the opposite arc, Orphelins in the two disconnected segments between them. Once you know this, the racetrack oval becomes intuitive. But intuitive is not the same as advantageous.

Neighbours and the Snake

A Neighbours bet places five straight-up chips on a number plus the two pockets on each side in wheel order, not table order. Five chips, 5/37 win probability per spin, 2.703% house edge. It's useful for targeting a sector if you have dealer-signature data or a bias hypothesis. In any other context, it's five chips at the standard rate.

The snake bet covers 12 specific red numbers that trace a zigzag path across the layout: 1, 5, 9, 12, 14, 16, 19, 23, 27, 30, 32, and 34. It requires 12 chips placed individually. Its expected value is identical to a column or dozen bet. It has no mathematical advantage over any other 12-number coverage. As RouletteStar confirms, it's a display bet: the kind of thing you place at a private table to signal that you know your way around a layout. The croupier knows what you're doing. The pit boss knows what you're doing. It does look rather distinguished, if that's the point.

Call Bets Versus Announced Bets

There's a practical distinction that matters at London tables.

In France and Monaco, a call bet is placed on credit: you announce the bet, the croupier places it, and you settle after the spin. In the UK, this practice effectively disappeared after 2007, when UKGC licensing conditions tightened to require that chips be staked before spin resolution. What exists on UK floors is the announced bet: you declare the bet and the croupier places it on the racetrack on your behalf, but your chips must already be on the table. As OnlineRouletteSites.org.uk explains, the credit arrangement that characterises a true call bet is specifically the element British casinos don't extend.

If you announce "voisins" at a London table, you're making an announced bet, not a call bet. The croupier expects to see your chips. The distinction matters practically. The old Monte Carlo credit convention is not how British floors work.

Key numbers

Bet typeNumbers coveredPayoutHouse edgeStd deviation per unit
Straight-up135:12.703%5.84
Split217:12.703%~4.11
Street311:12.703%~3.35
Corner48:12.703%~2.88
Six-line65:12.703%~2.27
Column or Dozen122:12.703%~1.45
Even-money (no La Partage)181:12.703%~1.00
Even-money (La Partage)181:11.351%~1.00
American basket (0, 00, 1, 2, 3)56:17.895%n/a
Sector betNumbersChipsWin probability per spin
Voisins du Zero17945.9% (17/37)
Tiers du Cylindre12632.4% (12/37)
Orphelins8521.6% (8/37)
Jeu Zero7418.9% (7/37)
Neighbours (any)5513.5% (5/37)

Source: our in-house edge analysis

Annabel
0:000:00

Welcome to the lesson on roulette bet types.

I'm Annabel, and today we are going to do something practical.

I'm going to walk you around the roulette layout and explain what you're actually betting on with each type of wager, what it pays, and what it costs you.

There are some genuine surprises in here, and one piece of information that I consider genuinely essential for any player who has graduated beyond beginner status.

Let's start with the inside bets, the ones placed on the numbered grid.

A straight-up bet covers one number.

It pays thirty-five to one on a European wheel.

A split covers two adjacent numbers and pays seventeen to one.

A street covers three numbers in a row and pays eleven to one.

A corner covers four numbers sharing a single point and pays eight to one.

A six-line covers two adjacent streets, six numbers, and pays five to one.

If you keep dividing the wheel this way you get to columns and dozens, which cover twelve numbers each and pay two to one.

Now, here is the thing I need you to hear clearly.

On a European single-zero wheel, every single one of those bets carries exactly two point seven percent house edge.

Not approximately.

Exactly.

This is an algebraic identity in the payout structure.

The casino always withholds one thirty-seventh of everything wagered, regardless of how you spread your chips.

Beginners are told to bet outside bets because they are "safer," which is true in one specific sense: outside bets have lower variance, meaning the swings are smaller.

But you are not getting better odds on the house.

The edge is identical.

The only bets where outside bets genuinely outperform inside bets are on a French table with La Partage in play, where even-money bets drop to one point three five percent while inside bets remain at two point seven.

We cover that in the La Partage lesson.

There is one structural exception on the American double-zero wheel that is worth knowing so you can avoid it.

The basket bet, covering zero, double-zero, one, two, and three, pays six to one.

Every other American wheel bet carries five point two six percent house edge.

The basket bet carries seven point eight nine five percent.

The reason is arithmetic: five numbers in thirty-eight pockets gives a fair payout of six point two to one.

The casino rounds down to six, and that rounding creates a unique overcharge you don't see anywhere else.

It's the only bet in standard roulette where the payout formula produces a rounding error rather than a clean fraction.

Don't play the basket.

Now let's talk about the oval.

At European and French tables, you will usually find a separate betting area called the racetrack, or in French, la piste.

Its numbers run in wheel order rather than grid order, and it exists specifically for placing sector bets: wagers on adjacent sections of the physical wheel rather than the layout grid.

The four standard sector bets are Voisins du Zero, Tiers du Cylindre, Orphelins, and Jeu Zero.

Voisins du Zero, the neighbours of zero, covers seventeen numbers across the arc from twenty-two to twenty-five on the wheel.

It takes nine chips: two on the zero-two-three trio, two on the twenty-two to twenty-nine corner, and one each on five splits covering the remaining numbers.

Tiers du Cylindre, the thirds, covers twelve numbers on the opposite arc, from twenty-seven to thirty-three, with six chips on six splits.

Orphelins, the orphans, covers the eight numbers left over in two disconnected arcs, using five chips.

Jeu Zero covers seven numbers around zero with four chips, including a straight-up on twenty-six.

All four carry two point seven percent house edge on a European wheel.

They are a convenient interface, not an advantage.

There is one other sector bet worth knowing: the snake.

It covers twelve specific red numbers that trace a zigzag path across the layout: one, five, nine, twelve, fourteen, sixteen, nineteen, twenty-three, twenty-seven, thirty, thirty-two, and thirty-four.

It requires twelve individual chips placed at those numbers.

Its expected value is identical to a column or dozen bet.

It has no mathematical advantage over any other twelve-number coverage.

It is a display bet, the kind of thing you place at a private table to signal that you know your way around a layout.

The croupier knows what you're doing.

The pit boss knows what you're doing.

But it does look rather distinguished.

One genuinely useful piece of London-specific knowledge concerns the difference between a call bet and an announced bet.

In France and Monaco, a call bet is placed on credit: you announce the bet, the croupier places it, and you settle after the spin.

In the UK, this practice effectively disappeared after 2007, when the UKGC licensing conditions tightened to require that chips be staked before spin resolution.

What exists on UK floors is the announced bet: you declare the bet and the croupier places it on the racetrack on your behalf, but your chips must already be on the table.

It is a practical distinction.

The old credit call bet is a Monte Carlo convention.

British floors use the announced version.

If you announce "voisins" at a London table, you're making an announced bet, not a call bet, and the croupier will expect to see your chips.

One last thing.

Players who discover sector bets often feel they have found an insider's approach, unavailable to the grid-betting masses.

They have found a cleaner interface for the same bets.

The edge is identical.

The only players for whom sector targeting makes rational sense are those playing a biased wheel or reading a dealer signature, and in both cases the sector follows from analysis, not from the existence of the racetrack oval.

We cover both of those scenarios in their own lessons.

For now, know your layout, know what each bet costs, and know that the only truly different number on that table is one point three five percent, which requires a French table with La Partage to access.

Enjoy yourself at the layout. Don't mistake the architecture for an edge.