Emma Raducanu’s encouraging Miami Open run came to an end in a narrow quarter-final defeat by world number four Jessica Pegula.
Despite needing medical treatment, the 22-year-old Briton levelled the match before American Pegula clinically regained control to win 6-4 6-7 (3-7) 6-2.
In the second set Raducanu played some of her best tennis since becoming a teenage Grand Slam champion at the 2021 US Open.
The world number 60 held a 5-2 lead and had four set points in the eighth game, before calling to see the doctor.
She had her blood pressure taken and was given ice towels to cool down before resuming.
The way in which Raducanu showed fortitude and fight to win the second set was impressive.
But she could not see the job through as Pegula demonstrated why she is one of the most consistent competitors on the WTA Tour.
“It was tough,” said US Open runner-up Pegula. “I just wanted to come out in the third set really strong, really quick, and jump on her.”
The 31-year-old will play 19-year-old Alexandra Eala from the Philippines in the semi-finals on Friday.
Eala continued her remarkable run by causing a seismic shock against five-time major champion Iga Swiatek earlier on Wednesday.
