Williams beat Olympic champion Camacho-Quinn to earn her second world title in Budapest, the pair separated by just one-hundredth of a second, and Shanghai will provide an early peek into their form heading into a mouth-watering Olympic summer.
Both, however, will have an eye over their shoulder for a rapidly-improving Charlton. The freshly-crowned world indoor 60m hurdles champion has twice broken the world record indoors in 2024.
Jamaican Williams has fond memories of China, having won her first world title in Beijing in 2015 and will hope to gain an early upper hand on her Olympic competitors.
Her and Camacho-Quinn have tussled for control of the event in recent years, with the pair having won 16 Diamond League events between them.
Puerto-Rican Camacho-Quinn has enjoyed nine successes to Williams’ seven, though the Jamaican can point to her 2019 Diamond League title.
Camacho Quinn’s personal best of 12.26s, run in taking the Olympic title in Tokyo sits at fifth in the world all-time list with Williams’ own best of 12.32s not far behind in 11th.
Charlton is a bit further adrift on 12.44s but shows plenty of signs of improvement, having broken Susanna Kallur’s 16-year-old world indoor 60m hurdles record at the Millrose Games and lowering it even further to 7.65s at the World Indoor Championships in Glasgow in March. The Bahamas athlete was fourth in the 2023 World Championships over 100m hurdles.
The trio of world champions will face the added challenge of home favourite Yanni Wu. The four-time Chinese 100m hurdles champion boasts a personal best of 12.76s and will have half an eye on Zhang Yu’s 30-year-old national record of 12.64s.
All four will aim to come out of the traps flying on April 27.