Dubai, March 2: Robin Haase, ranked 57th in the ATP rankings, advanced to the semi-finals of the Dubai Duty-Free Tennis Championships after beating Damir Dzumhur from Bosnia Herzegovina in three sets 6-2, 4-6, 6-4 in the first quarter-final of the men’s singles event here on Thursday. “I started well and balanced, but in the second set, Dzumhur made less mistakes, while I became less focused,” the 1.91 meter-tall Haase said after the match which lasted an hour and 51 minutes, reports Xinhua news agency.