Cilic overcame his good friend and fellow Croatian Ivan Dodig, the fourth seed and 2011 champion, 7-5, 6-4 in just over 90 minutes for a spot in the semi-finals. Cilic, who was the best man at Dodig's wedding, has now won 18 of his past 19 matches at the ATP World Tour 250 indoor tennis tournament. He has hit 32 aces in his three matches this week.
"It was tough," Cilic told ATPWorldTour.com. "There was a lot of emotion on the court. I was Ivan's best man at his wedding and we have been friends for many years. It was not easy to play. A few points decided the match."