The big three in the women’s 400m hurdles of Sydney McLaughlin, Dalilah Muhammad and Femke Bol all negotiated their semi-finals in style despite rain hammering down in the stadium.

Muhammad, the reigning champion, won the first race in 53.30 from Janieve Russell of Jamaica. World record-holder McLaughlin also qualified at a canter with 53.03 as Gianna Woodruff set a Panama record of 54.22 in second and Anna Ryzhykova of Ukraine qualified for the final as a fast loser with 54.23 in third.

Then came Bol and the Dutch athlete also looked relaxed as she eased through the finish line on an increasingly greasy track in 53.91. Behind, Anna Cockrell of the United States ran 54.17 and third-placed Viktoriya Tkachuk of Ukraine got the final fastest loser spot with 54.25.

Struggling in the wet conditions and battling with an inflamed Achilles tendon, Britain’s Jess Turner was seventh in 60.36. “It was horrendous – it is probably the worst rain I have ever ran in,” she said.

“It was tough and I couldn’t see the first hurdle. I couldn’t see any of the hurdles, it was so wet and rainy. It was like running through water it was so bad.”

On her Achilles problem, she added: “It was too painful, limping over the finish line wasn’t how it wanted it to end. But I just couldn’t run through it. I was thinking adrenaline would kick in, but I just couldn’t.”