The men's 4x400m final closed the World Athletics Relays in Gaborone on Sunday night with a result for the record books and a footnote that may matter even more. Botswana's quartet of Bayapo Ndori, Letsile Tebogo, Anthony Pesela and world champion Busang Collen Kebinatshipi gave the host nation its first World Relays gold in 2:54.47, a championship record, an African record and the third-fastest 4x400m clocking in history behind only the United States' 1993 world record of 2:54.29 and the 2024 Olympic final of 2:54.43. South Africa took silver in 2:55.07 with Australia rounding out the podium in 2:55.20. The roar that greeted Kebinatshipi's home-straight surge will be remembered, but the timing screen behind him hid the more historically significant number of the night.
That number belonged to Zakithi Pillay. The 21-year-old South African, anchoring his country to silver, was credited with a 42.66 split — the fastest 4x400m relay leg ever recorded. The previous mark, 42.94, had been set by Michael Johnson at the 1993 World Championships in Stuttgart and had survived 33 years, six Olympic cycles and the entirety of the modern super-spike era. Pillay's run took 0.28 seconds off it. World Athletics confirmed the split in its overnight bulletin, noting that the time was generated from photo-finish data rather than transponder estimates and is therefore eligible for inclusion in its all-time relay split list.
Botswana's winning effort was built differently. Ndori opened in 44.9 to keep the hosts in contact, Tebogo's second leg of 43.6 stretched the field, and Pesela handed Kebinatshipi a one-metre lead. The 22-year-old world 400m champion held off Pillay's onrushing finish with a 43.4 anchor of his own — the fastest closing leg by a winning runner anywhere in the world this year. Kebinatshipi celebrated with the Botswana flag held above his head as a sold-out Obed Itani Chilume Stadium produced the loudest cheer of the two-day meeting. Tebogo, who had been out of the meet's individual sprint events to manage a calf flare-up, called the result "the proudest moment of my career so far".
The day also produced a second world record for Jamaica, who lowered the mixed 4x100m mark to 39.62 a day after setting it at 39.99, and a third straight mixed 4x400m win for the United States in 3:07.47. Norway upset Jamaica and Great Britain in the women's 4x400m, while the USA reclaimed the men's 4x100m title in 37.43. But it was the closing 4x400m, with two of the three fastest team performances in history and the splits to match, that turned what had been billed as a building-block meet for the Tokyo 2027 World Championships into one of the most consequential nights of the season.
For the British, Belgian and American camps watching from the warm-down area, Pillay's 42.66 reframes what is now possible at the back end of a relay. Belgian coach Jacques Borlée, who has worked with three generations of 400m anchors, described the split as "a barrier rather than a record" and predicted that several teams will openly target sub-43 closes at the Tokyo World Championships in September 2027. South Africa, who lost their world relay titles in 2026 but produced two silvers and the night's defining run, leave Gaborone with a strengthened claim to medals at every distance from 100m to 800m. Pillay, who only moved up from the 200m to the 400m last winter, suddenly looks like the most coveted final leg in world athletics.