−0.25 and −0.75 Asian handicap: quarter lines in practice

Quarter lines in brief

A quarter line - also called a quarter ball or a split handicap - is two bets in one. The stake is cut in half, and each half goes on one of the two neighbouring lines. If you need the basics first, our Asian handicap primer explains how a handicap adjusts the score and settles every line from 0 to −2; this article works through the four quarter lines in money and in chances.

• −0.25 = half on 0, half on −0.5 (written 0, −0.5 or 0/−0.5)
• −0.75 = half on −0.5, half on −1 (written −0.5, −1 or −0.5/−1)
• +0.25 = half on 0, half on +0.5 (written 0, +0.5)
• +0.75 = half on +0.5, half on +1 (written +0.5, +1)

The same line is quoted from both ends: home −0.25 is away +0.25.

What each line asks of the match

• −0.25: win, and a draw costs you half.
• −0.75: win, and a one-goal win pays half.
• +0.25: don’t lose, and a draw pays half.
• +0.75: don’t lose by two, and a one-goal defeat costs half.

Every other result settles as a plain win or a plain loss. All the examples below use 10 units at odds of 1.95 and settle on 90 minutes plus stoppage time.

−0.25 and +0.25 in money

Ten units on your team at −0.25 is 5 units on 0 and 5 on −0.5, both at 1.95:

The draw is the only result in which the halves disagree, and a half loss returns half the stake whatever the price - 5.00 at 1.95, 1.70 or 2.40. The price only decides what a win pays.

+0.25 from the underdog’s side

The other team at +0.25 holds the same line from the other end: 5 units on 0 and 5 on +0.5. At the same 1.95:

Here the draw is a half win. Any half win returns stake × (odds + 1) ÷ 2 - here 10 × 2.95 ÷ 2 = 14.75 - so a half win at 1.95 pays the same as a full win at 1.475.

−0.75 and +0.75 in money

Ten units at −0.75 is 5 units on −0.5 and 5 on −1, both at 1.95:

One goal is the difference between a profit of 9.50 and one of 4.75. A draw or a defeat loses the whole stake, exactly as on −0.5.

+0.75: the mirror image

On the other side, 5 units on +0.5 and 5 on +1, at 1.95:

A draw is a full win on +0.75; only the one-goal defeat splits, refunding the half on +1.

Break-even: the chance each quarter line needs

A plain win-or-lose bet breaks even at 1 ÷ odds: 51.3% at 1.95. A quarter line has three or four outcomes, so the chance it needs depends on how often the split result happens. Write the expected value per unit staked on −0.25 (our guide to value betting explains EV):

EV per unit = p(win) × (odds − 1) − 0.5 × p(draw) − p(loss)

Now assume, purely for illustration, a 27% chance of a draw. At 1.95, with p(loss) = 1 − p(win) − 0.27, break-even is where the EV is zero:

p(win) × 0.95 − 0.5 × 0.27 − (1 − p(win) − 0.27) = 0

That simplifies to 1.95 × p(win) = 0.865, so p(win) = 44.4%. In general, −0.25 breaks even at (1 − half the draw chance) ÷ odds. Its neighbours follow the same pattern: the level line (0) needs (1 − draw chance) ÷ odds, because a draw is refunded, and −0.5 needs 1 ÷ odds, because a draw is a plain loss. Give them illustrative prices - 0 at 1.65, −0.5 at 2.25 - and vary the assumed draw chance:

Each cell is the win chance that line needs to break even. At 27% the three prices ask for almost the same win chance: they tell one story about the match. Change the draw assumption and they come apart. −0.5 ignores the draw; the level line’s requirement falls fastest as draws get likelier, because more of the matches it does not win come back as refunds; −0.25 moves less than half as far. Choosing between neighbouring lines is a view about the draw, not a better or worse bet.

All four lines at 1.95

The same algebra gives each quarter line its break-even. The chances are again assumptions for the example: a 27% draw, and a 25% chance that the favourite wins by exactly one goal.

The half-loss lines (−0.25, +0.75) need less than 51.3% of their main result, because their split result is only half lost. The half-win lines (−0.75, +0.25) need more, because theirs only half wins. Read both ends of one line together and the margin shows: −0.25 at 1.95 needs a 44.4% favourite win, while +0.25 at 1.95 needs a 57.9% chance of not losing - a favourite win of at most 42.1%. In between, neither side breaks even.

Where a quarter price sits between its neighbours

A quarter-line price sits between the prices of the two lines it is made of. For −0.25 the relationship is exact. Split the stake yourself - 5 units on 0 at 1.65 and 5 on −0.5 at 2.25 - and compare it with 10 units on −0.25 at 1.95:

• Win: 5 × 1.65 + 5 × 2.25 = 19.50, the same as 10 × 1.95.
• Draw: 5.00 refunded on the level line, the −0.5 half lost - the same 5.00.
• Defeat: nothing back either way.

They are the same bet in every result, because the draw - the only result where the halves differ - pays no odds in either version. So a −0.25 price is consistent with its neighbours when it is their plain average:

−0.25 price = (price on 0 + price on −0.5) ÷ 2

+0.75 works the same way with +0.5 and +1, because its split result, the one-goal defeat, is also a half loss. A quarter price above that average pays more on a win than the same split built from the neighbours; below it, less. Every other result is identical.

−0.75 and +0.25 sit only roughly between

On a half-win line the price enters the split result too. Take −0.5 at 1.75 and −1 at 2.30. Splitting the stake across them returns 20.25 on a win by two or more (8.75 + 11.50) and 13.75 on a one-goal win (8.75 + 5.00 refunded); −0.75 at 1.95 returns 19.50 and 14.75. No single price makes both rows match, so the −0.75 price lies somewhere between 1.75 and 2.30 - here below their 2.025 average, giving up some of the big-win payout for more on the one-goal win. Without a margin, a fair −0.75 price always lands below that average, and so does a fair +0.25 price between +0.5 and 0. With the 25% one-goal-win assumption, −0.5 at 1.75, −0.75 at 1.95 and −1 at 2.30 need win chances of 57.1%, 57.4% and 57.6%: again one story.

What holds on every quarter line is the half-and-half identity:

EV of the quarter line = ½ × EV of one neighbour + ½ × EV of the other, both at the quarter line’s price

Why bookmakers use quarter lines

The market leads with the line that splits the match most evenly - the main line - with both sides priced near even money. Half-goal steps are coarse. Assume, for illustration, a match with a 43% chance of a home win, 27% of a draw and 30% of an away win. Before any margin, the fair prices would be:

Neither the level line nor the half line comes near even money; the quarter line between them nearly does. A quarter-goal step lets the line sit where the market thinks the match really is. (The 1.65, 1.95 and 2.25 used above are the home column less roughly 3% of margin.)

Notice where the gap between 0 and −0.5 comes from. Before margin, the price on 0 is the price on −0.5 multiplied by (1 − draw chance): 2.33 × 0.73 ≈ 1.70. The likelier the draw, the bigger the jump between the two lines - which is why the choice between 0, −0.25 and −0.5 matters most when two closely matched teams meet and a draw is a real prospect. One step deeper, −0.5 and −1 differ only on a one-goal win, and −0.75 splits that result instead.

Common mistakes with quarter lines

• Treating −0.25 as draw no bet. Draw no bet is the level line, 0. On −0.25 a draw loses half: 10 units return 5.00, not 10.00.
• Forgetting the half results. At 1.95, a 1–1 on −0.25 is −5.00 and a 1–0 on −0.75 is +4.75 - neither a push nor a full win. A record that rounds them off misstates what happened.
• Comparing prices across lines. 1.95 on −0.25 and 2.25 on −0.5 in the same match are not one price that drifted; they are two bets, and both can express the same view. A price belongs to its line - the rule our guide to dropping odds applies to every move.
• Reading 1 ÷ odds as the chance. 1 ÷ 1.95 = 51.3%, but with an assumed 27% draw, −0.25 at 1.95 breaks even at a 44.4% win chance and +0.25 at a 57.9% chance of not losing. Once refunds are possible, the plain conversion in our implied-probability guide is only a rough reading.
• Taking a smaller swing for a better bet. −0.25 loses 5.00 on a draw where −0.5 loses 10.00, but at the prices above it also pays 9.50 on a win where −0.5 pays 12.50. Less variance makes a different bet, not a better one.

Quarter lines in play

In play, the main line keeps moving a quarter goal at a time. A favourite at −0.25 at kick-off that is still level after an hour can be on the level line by then: every minute without a goal makes the draw likelier, and the old line no longer splits the match evenly. A goal moves the line at once, and how far depends on whether the market counts goals already scored. Our guide to in-play Asian handicap covers both.

What Match-Lens keeps

Before kick-off, −0.5 is the same bet as the win in 1X2 and the level line is draw no bet, so the 1X2 price carries much of the story. Every fixture keeps three moments of it: S, the first pre-match price we recorded; K, the last recorded before kick-off; L, the live price. Opening a match shows its odds window, with FULL TIME, HALF TIME and CORNERS pages: the S and K rows are the bookends, and below them runs the live tick history with the minute and score. Results keep finished matches with their full-time statistics and their opening and kick-off prices, going back years. Our guides to which in-play stats matter and the Asian goal line cover the statistics beside a moving line and the goal line’s own quarter steps.

Frequently asked questions

Read next

• Asian handicap explained: every line from 0 to −2 with examples
• In-play Asian handicap: how the live line moves after a goal or red card
• What is value betting? Expected value in football, explained