Argentina's Francisco Cerundolo, ranked 21st, beat the German — a two-time former winner in Madrid — to repeat his feat from ...

A total of 22 matches had to be postponed because of the several-hours-long blackout that affected most of Spain and Portugal.

World No 2 Zverev was knocked out of the Madrid Open in the round of 16 by Argentina's Francisco Cerundolo 7-5, 6-3 to repeat his feat from last year.