The Five-Number (Top Line) Bet: The Worst Bet on the American Roulette Table

Every bet on the American double-zero roulette wheel carries a house edge of 5.26% — except one. The Top Line bet, also called the Five-Number bet, covers 0, 00, 1, 2, and 3. It pays 6:1. And it carries a house edge of 7.89% — nearly 50% higher than every other bet on the table. It is the single worst bet in American roulette, and understanding why helps clarify the mathematics that govern the entire game.

Why the Top Line Has a Higher House Edge

The house edge on any roulette bet is determined by the gap between the true odds and the payout odds. For a bet covering 5 numbers on a 38-pocket wheel, the true odds are 33:5 (or 6.6:1). The casino pays 6:1 — not 6.6:1. That 0.6-unit shortfall per win is where the extra edge comes from.

For comparison, a corner bet covers 4 numbers and pays 8:1. The true odds for 4 numbers are 34:4 (8.5:1). The gap is 0.5 units per win. For a double street covering 6 numbers, the true odds are 32:6 (5.33:1) and the payout is 5:1 — a gap of 0.33 units per win. The Top Line's gap is proportionally larger because the payout was set to a round number (6:1) that happens to be further from the true odds than any other bet on the layout.

The Structural Reason: American Wheel Arithmetic

The 38-pocket American wheel does not divide evenly by 5. There is no way to set a whole-number payout for a 5-number bet that produces a 5.26% house edge — the arithmetic simply does not work out. The casino chose 6:1 (which rounds down from 6.6:1) rather than 7:1 (which would round up and give the player a slight edge). The result is a bet where the house takes an extra 2.63 percentage points of edge compared to every other bet on the table.

This is not a conspiracy — it is a consequence of the wheel design. The European single-zero wheel has 37 pockets, which also does not divide evenly by 5, so European wheels typically do not offer a Top Line equivalent at all.

What the Top Line Covers (and Doesn't)

The Top Line covers 0, 00, 1, 2, and 3. These five numbers occupy two separate areas of the physical wheel — 0 and 00 are on opposite sides of the rotor, while 1, 2, and 3 are adjacent on the layout but scattered on the wheel. The bet provides no sector coverage, no meaningful statistical clustering, and no strategic advantage. It is a layout convenience, not a strategy.

If you want coverage on 0 and 00 (the green numbers), a more efficient approach is two separate straight-up bets at 35:1 each, which costs 2 units and pays 35 units net on a hit. The Top Line costs 5 units and pays 30 units net (6 × 5 = 30, minus 4 losing bets = 26 net). The straight-up approach gives you 35:2 effective odds on the green numbers; the Top Line gives you 26:5 effective odds on the same numbers plus three numbers you may not want.

The One Scenario Where It Appears

The Top Line appears on the betting table in the simulator because it is a standard American roulette bet that players encounter in casinos. The simulator's Auto-Populate function will never select the Top Line as a recommended bet — the statistical engine excludes it due to its inferior expected value. If you see it highlighted, it is because you placed it manually.

The Practical Rule

Never place the Top Line bet. If you want inside coverage near the green numbers, use straight-up bets on 0 and/or 00 individually. If you want coverage on 1, 2, and 3, use a street bet (11:1, 5.26% house edge). Both alternatives give you better expected value than the Top Line at the same or lower cost.

For a full breakdown of every bet on the American wheel and their house edges, see American Roulette Bet Types Explained. For the mathematical framework behind all roulette house edges, see The Mathematics of the House Edge in American Roulette.