Zimonjic, Matkowski reach quarterfinals in Madrid

Serbia’s Nenad Zimonjic and Poland’s Marcin Matkowski qualified for the quarterfinals of the Madrid Open doubles event, after beating Bulgaria’s Grigor Dimitrov and Austrian Jurgen Melzer in straight sets 6-3, 7-6 (9-7) in the second round Thursday.

Zimonjic and Matkowski will next play Serbia’s Viktor Troicki and Croatia’s Marin Cilic, who defeated Holland’s Jean-Julien Rojer and Romania’s Horia Tecau 6-4, 2-6, 10-7 on Wednesday.