The German third seed, who lost to Carlos Alcaraz in last year's final, was leading 6-4, 3-0 when Dutchman Griekspoor called it quits after just 51 minutes on Court Suzanne Lenglen.

"Unfortunately this morning in the warm-up... I pulled my abdominal (muscle) which made me not serve fully and not able to compete the way I would like," said Griekspoor, who was playing in the fourth round of a major for the first time.

Zverev will face either Novak Djokovic or Britain's Cameron Norrie in the last eight as he continues his bid for a maiden Grand Slam title.

He also reached the final at the Australian Open earlier this year before losing to world number one Jannik Sinner.