Overview
- Canada's mixed 4x100m team, featuring Sade McCreath, Marie-Eloise Leclair, Duan Asemota, and Eliezer Adjibi, secured gold with a season-best time of 40.30 seconds.
- Jamaica and Britain completed the mixed 4x100m podium, finishing in 40.44 and 40.88 seconds, respectively, with all three medalists achieving season-best times.
- Team USA failed to qualify for the mixed 4x100m final after a baton exchange error in the heats but defended their mixed 4x400m title with a championship-record time of 3:09.54.
- South Africa achieved world-leading times in both the men's 4x100m (37.61 seconds) and men's 4x400m (2:57.50), solidifying their position as a rising sprinting power.
- Spain's women's 4x400m team upset defending champions USA with a time of 3:24.13, while Britain's women's 4x100m team claimed gold in 42.21 seconds.