[Source: Reuters Sports]

Defending champion Iga Swiatek needed only 31 minutes to reach the French Open quarter-finals as her Ukrainian opponent Lesia Tsurenko retired after feeling unwell.

World number one Swiatek was 4-1 up in the opening set when Tsurenko called on the trainer and had her blood pressure and pulse checked.

Following a five-minute medical timeout, the match resumed but Tsurenko threw in the towel after losing the following game to love.

Swiatek next faces American sixth seed Coco Gauff in a repeat of last year’s final, which the Pole won 6-1 6-3 and she will enter the contest having spent just over four hours on court.

Wearing a ribbon in the Ukrainian colours pinned to her cap while Tsurenko had one on her top, Swiatek raced to a 4-0 lead as the world number 66 started to show signs of weakness.

She still managed to pull a break back but requested the trainer to come on court as she sat down on her bench at the change of ends.

She was seen explaining her problems to the medical staff and after being given the green light to continue, it soon became evident that she was struggling to play her shots and ended the match prematurely.

Swiatek has dropped only nine games en route to the quarter-finals as she chases a third Roland Garros title in four years.