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Win-both bets

Two bets on one game. If the final score lands in between, both win.

3 min readChecked on Oct 31, 2026

A win-both bet (also called a middle) is two bets on one game at different lines. They are placed so that both bets can win.

Most of the time only one wins, and you lose a little. Sometimes the result lands in the gap between the lines and both win. That pays much more than the small losses cost.

Whether one is worth it comes down to one number: how often it hits.

How it works

Say one site has a basketball total at 220.5. Another has it at 224.5. You bet Over 220.5 at the first site and Under 224.5 at the second.

If the game ends with 221, 222, 223 or 224 points in total, both bets win. Any other total, one bet wins and the other loses.

Example

Over 220.5 and Under 224.5, both at 1.95, $100 in total

  1. Bet $50.00 on each side. The prices are the same, so the split is even.
  2. If one bet wins: $50.00 x 1.95 = $97.50 back from $100. You lose $2.50.
  3. If both win: $97.50 + $97.50 = $195.00 back. You win $95.00.
  4. To break even, it has to hit 2.50 / (95.00 + 2.50) = 2.56% of the time. That is about 1 in 39.
The win-both formulas
Sum = 1 / odds A + 1 / odds BIf one wins = total / sum - totalIf both win = 2 x total / sum - totalBreak-even hit rate = loss if one wins / (win if both + loss if one wins)

Is it a good bet?

It depends on how often games land in the gap. Take an NBA total with these lines, and the main line in between them. WynFynd's estimate is about 8.8%. It needs 2.56%.

On average that is worth about +$6.13 per $100. Treat that as an estimate. It comes from a bell curve with a typical spread of NBA totals, not from counting real games. WynFynd labels every number like this as an estimate.

A gap of 4 points between two sites is wide. Gaps are usually smaller, and a smaller gap hits less often. So check each one in the calculator.

Spreads and key numbers

Spreads work the same way, with the winning margin instead of the total. Take team A -2.5 at one site and team B +3.5 at another. Both win if team A wins by exactly 3.

In the NFL, 3 and 7 are the most common winning margins. So many points come from field goals, and from touchdowns with the extra point. WynFynd's estimate gives extra weight to those key numbers.

Take -2.5 and +3.5, with the main line at 3. It estimates team A wins by exactly 3 about 8.0% of the time. It needs 2.56% at these prices.

What to watch

  • Whole-number lines can push. With Over 220 and Under 224, a total of exactly 220 refunds the Over bet, and the Under wins. A push is better than a loss, so it helps a little.
  • The small losses add up. Some win-both bets hit less often than they need to. If you take those, the losses win in the end. Wide gaps and good prices matter.
  • Same rules at both sites. Check that both bets settle the same way, for example with overtime included.
  • Player props are rougher. There is no good estimate of how often they land in the gap, so WynFynd doesn't show one.

Try it