Competition identity
The ordinary aim is exactly zero
In the standard 501 format, a player begins a leg at 501 and subtracts scored visits. The leg is won by reaching exactly zero with a finishing double, including the inner bull where appropriate. The number on the scoreboard is usually the score remaining, so the lower total is closer to a checkout.
A hypothetical visit of 100 from 301 leaves 201. It does not mean the player has a total score of 100 for the match. A separate average or visit graphic is a statistic, not the same field as the remaining leg score.
The double makes checkout more than subtraction
With 40 remaining, double twenty is a direct finish. A single twenty leaves twenty, which can be finished with double ten. Reaching zero using a final single does not meet the double-out requirement.
Do not assume every event uses identical starting rules. The World Grand Prix is a familiar double-in variation: its opening requirement differs from the ordinary straight start. The named event’s tournament rules govern the format.
A bust does not leave the impossible remainder
Scoring too many, leaving one, or reaching zero without the required finishing double produces a bust under the ordinary double-out game. The player’s score returns to the amount at the start of that visit. A scoreboard may therefore return to an earlier number after darts have visibly scored.
For example, a hypothetical player begins a visit on 32 and scores 20, leaving 12. If the next dart scores 20, the visit is bust. The next visit begins from 32, not twelve and not a negative total. This is why a missed double can affect more than one dart’s apparent score.
A leg is one game; a set groups legs
A straight-leg match counts legs towards a stated target. In a set-format match, players first win legs to take a set and then win enough sets to take the match. A graphic can therefore carry points remaining, legs and sets at the same time.
A best-of-five-leg example needs three legs to win. A best-of-five-set match needs three sets, with the event specifying how each set is won. Do not multiply the headline set total into a fixed match duration: some legs and later sets may never be needed.
Use the actual tournament document for the final deciding rules
The Darts Regulation Authority publishes the current rulebook through its official download page. Tournament-specific format remains essential for set length, opening conditions and deciding-leg procedures. Older public PDFs explain the basic game but should not be treated as proof of every current event detail.
When following a close match, identify whether the graphic’s leading number means sets or legs before deciding how close either player is to victory.
Questions answered
Does the highest visit win the leg?
No. The player must complete the required checkout.
What does a best-of-five-leg match require?
Three leg wins.
Is a set the same thing as one visit?
No. A set contains legs, while a visit is a player’s turn at the board.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.