Nicolas Almagro beats Tommy Robredo to advance at Madrid Open
Almagro will play against the World No.2 Serbian Novak Djokovic in the second round on Wednesday.
Almagro will play against the World No.2 Serbian Novak Djokovic in the second round on Wednesday.
Zverev took two hours and 26 minutes to defeat World No. 57 Almagro 7-6 (7-4), 4-6, 6-4.
Almagro threw in the towel with a calf injury at 4-0 down in the first set against France's Jeremy Chardy.
Almagro threw in the towel with a calf injury at 4-0 down in the first set against France's Jeremy Chardy.