When she won the women’s discus at last year’s series final in Zurich, Valarie Allman made Diamond League history.
The American’s winning throw of 69.18m not only secured a fifth successive Diamond Trophy, leaving her just one title short of Sandra Elkasevic’s record of six: she also completed a perfect Diamond League season.
Zurich was Allman’s fifth full Diamond League win of 2025, after she won every single leg on the Road to the Final with victories in Xiamen, Rome, Paris and Eugene, as well as in the non-Diamond League discus competition in Keqiao.
While Germany’s Kristin Prudenz won the women’s discus in Stockholm, that too was a non-Diamond Discipline, meaning Allman still walked away with a perfect record in the 2025 season.
She is only the eighth athlete ever to win every single Diamond League competition in one season.
It is something which even the likes of Femke Bol and Mondo Duplantis who have dominated their chosen disciplines for years on end, have never achieved.
The first athlete to achieve a Diamond League clean sweep was New Zealand shot put legend Valerie Adams, then known as Valerie Vili, in the series’ inaugural season back in 2010.
Adams claimed seven wins out of seven in what was then the Diamond Race, clearing the 20-metre mark on four separate occasions.
She repeated the feat four years later, when she claimed the fifth of her six Diamond League titles.
Those six titles make Adams the joint most successful female athlete in Diamond League history alongside Sandra Elkasević and Caterine Ibargüen.
It was Elkasević, Allman’s erstwhile rival in the discus, who claimed the second perfect season when she won seven out of seven competitions in 2013, throwing meeting records in Doha, New York and Lausanne.
The feat was then matched by Mariya Lasitskene in the women’s high jump in 2017, who cleared the two-metre-mark in all seven of her seven victories.
The following year, Colombian legend Ibargüen wrote her name into the history books with five wins in five in the women’s triple jump.
2018 was a vintage Diamond League year for Ibargüen, who secured the long jump and triple jump titles in two different cities on back-to-back days at the end of the season.
The first male athlete to win every Diamond League meeting in a season was Swedish discus thrower Daniel Ståhl, who won all four competitions en route to his title in 2021.
A year later, Ståhl was usurped by Slovenian rival Kristjan Čeh, who launched his own perfect season with a Diamond League record of 71.27m in Birmingham.
2022 was the only year in which two athletes managed a clean sweep, with Chase Jackson (then Chase Ealey) also winning all five competitions in the women’s shot put.
When Allman crowned her extraordinary season in 2025, she was the first athlete in three years to cut a perfect diamond.
There are, however, several athletes who might fancy their chances of doing so in 2026.
Pole vault superstar Duplantis has come close to a clean sweep on several occasions, most recently when he won seven out of eight competitions in 2025.
Femke Bol is unbeaten in 30 Diamond League races in the 400m hurdles in a run stretching back to 2020, though she the Dutchwoman is expected to switch her focus to the 800m in 2026.
Venezuela’s Yulimar Rojas, who came close in each of her title-winning seasons between 2021 and 2023, is also expected to return to action in the women’s triple jump next season.
Meanwhile Allman’s fellow discus Diamond League champion Mykolas Alekna may back himself to dominate in 2026 after he won three of the last four competitions last season, breaking Čeh’s Diamond League record in London.
