NEW YORK (Reuters) - World number seven Andrey Rublev made short work of veteran qualifier Ivo Karlovic in the U.S. Open first round on Monday, beating the tricky Croatian 6-3 7-6(3) 6-3.

The Russian came into the year's final Grand Slam having reached the Cincinnati title clash and made a blistering start on Grandstand, winning the opening three games of the match before taking the first set with ease.