What It Pays
One chip on the corner where the zero row meets the first row of numbers covers all five of 0, 00, 1, 2 and 3. It wins 13.16% of spins and pays 6 to 1.
It exists only on a double-zero American layout, because it needs both green pockets to make five numbers out of that corner.
Why the Arithmetic Breaks
Roulette payouts are built from a single rule: a bet covering n numbers pays 36/n minus one. That rule generates the entire payout table, and it works cleanly because 36 happens to be divisible by 1, 2, 3, 4, 6, 12 and 18 — which is exactly the list of bets the layout offers.
Five is not a divisor of 36. The Top Line is the only bet that asks for a fractional payout, and the casino resolves the fraction by rounding down. Two tenths of a chip on a five-chip position does not sound like much; it is the difference between 5.26% and 7.89%.
Not approximately 50%. Exactly: three thirty-eighths against two thirty-eighths. The rounding costs one extra unit of the wheel's 38, on top of the two that the double zero already takes.
7.89% Against 5.26%
| Bet | Wheel | Numbers | Pays | Cost per dollar |
|---|---|---|---|---|
| Even money, la partage | French | 18 | 1:1 | 1.35% |
| Anything | European | 1–18 | varies | 2.70% |
| Anything but the Top Line | American | 1–18 | varies | 5.26% |
| Top Line | American | 5 | 6:1 | 7.89% |
The bottom row is nearly six times the price of the top one, for a bet that looks like any other chip on the felt. It also sits above most slot machines and well above blackjack played with any sense at all — the basic-strategy tables put a competent blackjack player under 1%.
What an Hour Costs
Roughly twenty dollars an hour of pure surcharge at a $10 stake, bought by placing a chip one position away from where it should have gone.
Where It Is and What to Do Instead
The Top Line chip sits on the outside corner where the 0/00 row meets 1-2-3 — the top-left corner of the American layout, which is where the name comes from. It is also called the five-number bet, the basket (confusingly, since that name is used for other positions too), and the beast, which is the only nickname in roulette that amounts to a warning.
If you want those numbers on an American table, there is a way to get them at the normal 5.26% and it costs nothing to learn:
The two positions pay differently — 17:1 and 11:1 on a dollar each rather than 6:1 on two — so the win amounts differ. The expected cost does not: you have replaced a bet the payout table cannot express with two that it can. Anyone who tells you the Top Line is a convenient shortcut is describing a shortcut that charges 50% for the convenience.
The better answer, as always with an American wheel, is not to be at one. Every bet on a European table costs 2.70%, and an even-money bet on a French table costs 1.35%.
The European Wheel Has No Equivalent
A single-zero layout cannot build a five-number bet out of that corner — there is only one green pocket, so the equivalent position covers four numbers (0, 1, 2, 3) and pays 8:1, which is the ordinary corner arithmetic at the ordinary 2.70%. There is also a three-number trio, 0-1-2 or 0-2-3, paying 11:1 like any street.
This is why the broader claim survives the exception: on a European wheel, every single bet costs exactly one thirty-seventh of the stake, with no rounding anywhere, because every available bet covers a divisor of 36. The Top Line is not a flaw in roulette's design — it is what happens when a double-zero wheel is fitted to a payout table built for a single-zero one, and a five-number bet falls out of the gap.
Reality check: there is no situation in which the Top Line is the right bet. It is the one place in roulette where a player can make a decision that is simply wrong rather than merely a matter of preference, and avoiding it costs nothing at all — the same five numbers are available two positions away at the normal price.
Play with the math on your side
SlotDrop's free tools show you the real house edge, EV and variance behind every bet — before you place it.
Open the Black Box →Reality check: no strategy on this page turns a negative-expectation game into a positive one. Strategy reduces how much the house takes and how fast your bankroll disappears — it does not guarantee profit. Only ever bet money you can afford to lose entirely.