Third-seeded Marin Cilic of Croatia beat Dutchman Igor Sijsling 7-5, 6-3 on Wednesday to reach the quarterfinals of the Croatia Open.
It was Cilic's fourth victory over Sijsling in as many encounters and the Croatian was dominant from the start. Playing steadily from the baseline, he took a 5-2 lead in the first set before Sijsling leveled for 5-5. Cilic then broke in the 12th game on his second set point.
Cilic, who won the tournament in 2012 and reached the 2011 final, broke again at 3-2 in the second set before easily finishing off the match.
Fifth-seeded Czech Lukas Rosol also reached the quarterfinals, defeating Spaniard Pere Riba 7-6 (4), 6-1.