During the second week of a major, a commentator will say a player "won a walkover into the quarterfinals," and somewhere a viewer quietly files it next to "retirement" and "default" as roughly the same thing — a match that didn't happen. It isn't the same thing. The walkovers definition that the tours actually use is narrow, it sits at a specific moment in the timeline of a match, and which side of that moment a withdrawal falls on decides whether ranking points are awarded, whether prize money moves, and whether anyone records a win at all.

We read the ATP and WTA rulebooks, the Grand Slam regulations, and the documented history of cases where this mattered. The short answer is below. The longer answer is where the tours quietly disagree.

What is a walkover in tennis

A walkover is awarded when a player who is entered into a match is unable to compete and withdraws before the match begins — before the first ball is struck. The opponent advances to the next round without playing. The advancing player is credited with progressing, but, critically, is not credited with a match win, and the withdrawing player is not charged with a match loss. No score is recorded. The line in the box score reads "w/o," not a set count.

That timing — before the match starts — is the whole mechanism. It separates a walkover from everything it gets confused with. A player who withdraws after the first point has not given a walkover; they have retired, and the difference is not cosmetic. It changes the numbers attached to both players.

The mechanism, in the order it happens

The cleanest way to understand walkovers is to follow what happens step by step, because each step is a decision point that determines the outcome.

First: a reason arises before play

Something prevents a player from taking the court. The common causes are illness, an injury sustained in a prior round or in practice, a personal emergency, or a sanction. The defining feature is timing. The cause matures before the match is due to begin, or at least before the first point is played. Tennis treats the start of a match as a hard threshold. Everything before it is one category of event; everything after it is another.

Second: notification and the referee's decision

The player, usually through their team or the tournament physician, notifies tournament officials that they cannot compete. The decision to award a walkover is not the player's to declare unilaterally — it is made by the tournament referee. The ATP Official Rulebook frames a walkover as the referee's determination that a player cannot compete for an authorized reason. This matters because the same physical situation can resolve into different outcomes depending on the referee's ruling. A player who is simply absent without an accepted reason is not handed a clean walkover in the same administrative sense as one withdrawing for a documented injury; the unexcused case can pull in penalties under the Code of Conduct.

Third: the opponent advances, but does not "win"

The opponent moves to the next round. Here the language is exact and worth holding onto. The advancing player receives no match victory on their record. In a head-to-head between two players, a walkover does not add to either player's win or loss column. This is the single most misunderstood part of the term. Broadcasts say "won a walkover" because the player advanced, but the record book does not agree that a match was won. There was no match.

Fourth: ranking points and prize money are assigned

This is where the stakes live, and where the tours stop being identical.

The advancing player earns the ranking points and prize money for reaching the round they advance into, exactly as if they had played and won the previous match. So a player who receives a walkover into a semifinal collects quarterfinalist points and money at minimum, and stands to earn more by progressing. They are not penalized for the absence of an opponent.

The withdrawing player's situation is more variable, and it depends on when in the event the withdrawal occurred and what the tour's rules say about it. A player who gives a walkover after already qualifying for the main draw generally keeps the prize money and points associated with the round they had already reached. A player who pulls out before the tournament begins is handled under separate withdrawal rules and may forfeit their place to a lucky loser.

Fifth: the record settles

When everything clears, the box score shows "w/o." No 6–4, 7–5. No retirement notation. The match simply did not occur, and the official result reflects that absence rather than a contest. The advancing player's name carries forward in the draw; the withdrawing player's tournament ends without a recorded defeat in that round.

A pristine empty professional tennis court at a major tournament, viewed from a low…

Where the ATP and WTA actually differ

The frustration that sends people looking for a single authoritative explanation is real, and it is justified. The tours use the same word for something they administer with slightly different machinery.

Both the ATP and WTA agree on the core: a walkover is a pre-match withdrawal, the opponent advances, no match result is recorded, and the advancing player gets credit for reaching the next round. On the definition itself, the two are close to interchangeable. The divergence shows up in the surrounding rules — the consequences for the withdrawing player, the on-site medical and timing requirements, and how walkovers interact with commitment and penalty structures.

The most discussed difference historically has been how each tour treats on-site withdrawals and the obligations that come with them. Both tours require that a player who withdraws on-site for a medical reason be examined by tournament medical staff, and both attach financial and disciplinary consequences to withdrawals that don't follow procedure. The specific dollar figures, the windows for notification, and the way these feed into a player's commitment or bonus-pool standing are governed by each tour's separate rulebook and revised year to year. The practical upshot for a fan watching coverage is this: the event of a walkover looks identical on screen, but the paperwork behind it — what the withdrawing player owes, forfeits, or must document — runs on two different sets of rules.

There is one place where the difference becomes visible to anyone watching a result page. Both tours, and the Grand Slams, are explicit that a walkover is not a retirement and not a default. The notations differ, the consequences differ, and conflating them — as broadcasts routinely do — is the source of most of the confusion.

The three things a walkover is not

To define a walkover precisely, it helps to nail down its neighbors, because the boundaries between them are exactly where the term loses its meaning in casual use.

Term When it happens Match result recorded Opponent credited with win
Walkover (w/o) Before the first point No No
Retirement (ret.) After play begins Yes — partial score, opponent wins Yes
Default (def.) Before or during, for a rules violation Yes — opponent wins Yes
No-show / withdrawal Before the match, no valid notice Varies; may trigger penalties Often as a walkover, but with sanctions

Retirement is the close cousin. A player who starts a match and cannot finish — cramping at 4–3 in the third, say — retires. The opponent is credited with a genuine win, a partial score is recorded, and the result enters both players' head-to-head. The first point played is the dividing line. Before it: walkover. After it: retirement.

Default is disciplinary. A player removed from a match for a Code of Conduct violation — racquet abuse, a struck ball that hits an official, audible obscenity stacked to the threshold — is defaulted. The opponent wins. The defaulted player loses, often with additional fines and forfeited points. A default can occur before a match too, but it is never neutral the way a walkover is. There is fault attached.

No-show is the messy edge. A player who simply fails to appear without an accepted reason hands their opponent the advancement, but the absence is treated under penalty rules rather than as a clean medical walkover. The opponent still advances; the absent player may face fines or worse. The on-screen result can still read as a walkover, which is part of why the term gets stretched to cover situations the rulebook would separate.

Why the inconsistency is built in, not accidental

It is tempting to treat the ATP–WTA divergence as sloppiness. It isn't, quite. The two tours are separate organizations with separate commercial and disciplinary structures, and the walkover is not really one rule — it is a definition (which they share) bolted onto a set of consequences (which they don't). The Grand Slams add a fourth layer, governed by the Grand Slam Board rather than either tour, with their own regulations on withdrawals, lucky losers, and first-round prize money for players who can't take the court.

That last item is itself a relatively recent attempt to manage the incentives around walkovers. The majors introduced provisions allowing a player who qualifies for the main draw but then withdraws before their first-round match — for a genuine injury, declared in time — to still receive a portion of first-round prize money, while a healthy lucky loser takes the court in their place. The point of the policy was to remove the financial pressure that pushed visibly injured players to walk on court, play two uncompetitive games, and retire, purely to claim the appearance fee or first-round check. In other words, the rules around walkovers were redesigned specifically to make the honest walkover less costly than the dishonest non-effort. That is the clearest signal that the category does real work: governing bodies tune it deliberately.

A tournament referee in a dark blazer standing at the edge of a tennis…

So when a fan notices that the ATP and WTA "handle the same situation differently," the observation is correct and the confusion is not a failure of comprehension. The shared word hides genuinely separate rulebooks.

Cases that make the rule concrete

Abstract definitions slide off the memory. Specific matches stick.

The most consequential walkovers tend to cluster at the business end of majors, where a single advancement is worth a great deal. At the 2008 Olympic tennis event and across countless tour stops, walkovers have decided who reaches a medal round or a final without a ball being struck — a reminder that the term carries real weight, not merely an administrative footnote.

A frequently cited example of a walkover into a major final involves a finalist withdrawing the day before play with injury, handing their opponent a title-match berth without a contest. The advancing player collects finalist points and money and a place in the final; no semifinal win enters their record. The withdrawing player's run ends without a recorded loss in that round. To a casual viewer it looks like a player "made the final by walkover," which is true in the sense of advancement and false in the sense of a match won — both halves of that sentence are correct, and holding both at once is the whole point of understanding the term.

The pattern repeats at smaller scales every week on both tours: a player tweaks an ankle in practice the morning of a second-round match, the referee rules a walkover, the opponent advances with points and prize money for that round, and the result page shows two letters where a scoreline would be. Unspectacular, common, and precisely the situation the definition was written to handle.

The contested cases — the ones that generate argument — are almost always the ones near the no-show boundary, where it is unclear whether a withdrawal was a legitimate medical walkover or an avoidance that should attract a penalty. That is where the referee's discretion under the Code of Conduct does the heavy lifting, and where two tours with two rulebooks can reach two different financial outcomes for what looked, on television, like the same event.

What is settled and what is not

The definition itself is well-established and consistent: across the ATP, the WTA, and the Grand Slams, a walkover is a pre-match withdrawal, the opponent advances without a recorded win, the withdrawing player takes no recorded loss, and the advancing player receives the points and money for the round reached. On that core, the rulebooks agree, and any source telling you otherwise is wrong.

What is genuinely variable — not contested, just different by organization — is the apparatus around the withdrawing player: medical examination requirements, notification windows, fines, forfeitures, and how the event feeds into commitment and bonus structures. These differ between tours and change with annual rulebook revisions, so a specific dollar figure quoted in one season may not hold in the next. We would treat any precise penalty number you find online with caution unless it cites the current year's official rulebook directly.

What remains folk wisdom is the broadcast usage — "won a walkover" treated as a win, "walkover" used loosely for any unplayed or abandoned match. It is common, it is convenient, and it is imprecise. The record book does not log a match that was never played, and a retirement is not a walkover no matter how the commentator phrases it.

One thing to try this week

The next time you are watching a tournament and see a "w/o" or hear a player described as winning a walkover, open the official tour result page for that match — the ATP or WTA site, not an aggregator — and check two things: whether a partial score appears, and how the advancing player's record changes. If there is no score and no added match win, you are looking at a true walkover. If there is a partial score and a recorded win, it was a retirement that someone called a walkover. The discrepancy will show up within a few seconds, and after doing it twice the distinction stops being something you have to look up and becomes something you can see.

A walkover is not a match won; it is a match that never started, and the whole rulebook hangs on that one word — before. Note on sourcing: the definitions and procedural framing above reflect the ATP Official Rulebook, the WTA rulebook, and Grand Slam regulations as documented in their published versions. Specific fines, notification windows, and prize-money provisions are revised annually by each governing body and should be checked against the current year's official text rather than treated as fixed.