SOFIA, Bulgaria — Martin Klizan of Slovakia is the first player to reach the quarterfinals of the inaugural Sofia Open.
The seventh-seeded Klizan took more than two hours to defeat Lukas Rosol of the Czech Republic 6-3, 2-6, 7-6 (4) on Wednesday. Klizan awaits either fourth-seeded Andreas Seppi or Thiemo de Bakker of the Netherlands.
The eighth-seeded Adrian Mannarino of France saved all three break points he faced in beating Evgeny Donskoy of Russia 6-2, 7-5, and lined up Marius Copil of Romania in the second round at Arena Armeec.
The second-seeded Viktor Troicki will open his Sofia campaign in the second round against German qualifier Daniel Brands, who beat Thomas Fabbiano 7-6 (5), 6-3 in their first tour-level match.