Poor Grigor Dimitrov appeared to be on the brink of defeat as he trailed Francisco Cerundolo 3-0 in the deciding set, but the veteran Bulgarian has roared back to level it at 3-3.

Emma Raducanu is set to return to the world’s top 50 as a result of her results in Miami.

Having reached the quarter-finals, Raducanu is set to rise 12 places to 48 in the rankings.

And, if she can beat fourth seed Jessica Pegula, Raducanu would reclaim her status of British No 1 from Katie Boulter.

That win for Eala came after Iga Swiatek was given extra security in Miami - like Raducanu had in Indian Wells - after being abused by an “aggressive” fan from the stands during a practice session on Saturday.

This was reportedly not an isolated incident, with her team revealing that the same man previously sent abusive messages to her on social media, in another troubling incident of female players facing threats to their safety on the tour.

We’re heading to another third set in the men’s quarter-finals.

Grigor Dimitrov has levelled it up against Francisco Cerundolo, winning the second 6-4 after losing the first on the tiebreak.

A 37-minute second set means we’ll have to wait a little longer for Raducanu and Pegula to take to the court.

Whoever wins this encounter will play Alexandra Eala, who continued her dream run in Miami with a straight-sets win over an out-of-sorts world No 2 Iga Swiatek in the earlier quarter-final on Wednesday.

On the other side of the draw, top seed Aryna Sabalenka plays sixth seed Jasmine Paolini in the other semi-final.

Raducanu won their last meeting on the grass at Eastbourne last year, a result that was her first victory over a top-10 opponent.

Pegula won their only other meeting on the hard courts of Cincinnati in 2022.

2024: Eastbourne, last-16 (grass): Raducanu won 4-6 7-6 7-5

2022: Cincinnati, last-16 (hard court): Pegula won 7-5 6-4

Pegula’s best result in Miami has been reaching the semi-finals twice, in 2022 and 2023.

We’re expecting Raducanu and Pegula to not be on court until at least 11.30pm UK time, with the final men’s match on Stadium before them - Francisco Cerundolo vs Grigor Dimitrov - having only just entered a second set.

Cerundolo won the first 7-6(8-6) after a topsy-turvy, tricky opener for both players, with both struggling with unforced errors. Dimitrov had seven set points but couldn’t close any of them out.

The pair have only played each other twice, splitting the spoils evenly, but Pegula - last year’s US Open finalist and the fourth seed - is a hugely tricky opponent, whose consistency at the business end of tournaments has seen her rise to fourth in the world.

Since ended her coaching trial with Vladimir Platenik on the eve of the Miami tournament Raducanu has been working with former mentors Mark Petchey and Jane O’Donoghue during the fortnight.

And Raducanu said the change of approach and working with people who she “trusts” has helped her “have fun” off the court and contributed to her performances in matches.

There has been further disruption in the Raducanu camp after she ended a trial with Slovakian coach Vladimir Platenik after two weeks. The Brit had worked with Nick Cavaday until he stepped down after the Australian Open for health reasons, and is yet to appoint a permanent replacement.

But no coach, no problem, it seems.