The list of near-misses is a list of significant careers. Beth Herr won Roland Garros, Wimbledon and the US Open in 1982 and stopped there. Victoria Azarenka — later a world No. 1 and multiple senior Grand Slam champion — won the Australian Open, Roland Garros and Wimbledon in 2005 and did not complete the set. Anastasia Pavlyuchenkova did exactly the same three in 2006. Urszula Radwanska won Roland Garros, Wimbledon and the US Open back to back in 2007. Timea Babos and Sloane Stephens managed three in a row as a team in 2010, as did Barbora Krejcikova and Katerina Siniakova in 2013 — both halves of that last pair going on to win senior Grand Slam doubles titles and an Olympic gold. Every one of them found the fourth beyond reach.
Why the fourth is so hard is structural rather than mysterious. Junior doubles pairings are unstable: partners age out of junior eligibility, get injured, switch to professional events, or are assigned differently by national federations. Holding a run together across twelve months and four continents requires the partnership itself to survive, and most do not. Kovackova solved this by not depending on a single partner. Two of the four titles came with her sister Alena; the last two came with Katerina Zajickova. The constant across all four was her.
The Wimbledon final itself was as close as a junior doubles match can be — a tie-break in the first set, a tie-break lost in the second, and a match tie-break to ten points decided 10-6. The Brazilian pair on the other side of the net were playing for a first as well: a win would have made Barros and Leme da Silva the first Brazilian girls' Grand Slam champions in either singles or doubles. They lost by four points in a super tie-break.
Kovackova's fortnight was not confined to doubles. She reached the singles semi-final at Roland Garros in 2026, losing to Alisa Oktiabreva, who went on to win the title — which is to say the doubles record was set by a player who was simultaneously among the better junior singles players in the world, not by a doubles specialist.
The record is a clean one and easy to state: first player to complete a non-calendar-year Grand Slam in girls' doubles, at Wimbledon, on 11 July 2026, with the sequence US Open 2025, Australian Open 2026, Roland Garros 2026, Wimbledon 2026. It is unusual for a junior record to be genuinely unprecedented rather than merely rare. This one is.
| Person | Country | Milestone | Age / Stat |
|---|---|---|---|
| Jana Kovackova | 🇨🇿 Czechia | First player to win all four girls' doubles majors in succession | 2025-26 |
| Victoria Azarenka | 🇧🇾 Belarus | Three consecutive girls' doubles majors, 2005 — fourth not completed | 2005 |
| Urszula Radwanska | 🇵🇱 Poland | Three consecutive girls' doubles majors, 2007 | 2007 |
| Krejcikova & Siniakova | 🇨🇿 Czechia | Three consecutive girls' doubles majors as a team, 2013 | 2013 |
Genuinely unprecedented junior records are rare, because junior tennis has been played at all four majors for decades and most of the obvious feats have been achieved. This one had been attempted and missed by eight players across forty-four years, including a future world No. 1 and two future Olympic doubles champions. The reason it kept failing is structural — junior doubles partnerships rarely survive a full year — and Kovackova got around it by winning with two different partners.
The honest limit: doubles at junior level is a weaker predictor of a senior career than singles, and the players who previously came closest to this record had wildly different outcomes, from world No. 1 to no professional career at all. Kovackova was also a Roland Garros singles semi-finalist in the same season, which is the more meaningful signal of the two. Neither settles what follows.
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