<p>New York: Fourth seed Alexander Zverev out-duelled fellow German Maximilian Marterer 6-2 6-7(5) 6-3 6-2 in the first round of the US Open on Monday.</p><p>Zverev, seeking a debut Grand Slam title after reaching the Australian Open semis and the Roland Garros final this year, flexed his dominant serve as he blasted 21 aces on the Grandstand.</p><p>Unseeded Marterer, the "lucky loser" that entered the draw after Emil Ruusuvuori withdrew last week, captured a close second set but was ultimately overpowered by the world No. 4.</p> .<p>Zverev looked sharp in the first set, breaking his opponent's serve in the opening game before Marterer battled back to claim a back-and-forth second set in a tiebreak.</p><p>The big-serving Zverev looked frustrated at times, tossing his racket at the start of the third set after committing one of 44 unforced errors.</p><p>Zverev called his topsy-turvy performance in the year's final major a typical opening round for him, and said he expects to shore up his game in upcoming matches.</p> .<p>"I'm not usually the type of player that plays extremely well in first-round matches," Zverev said, citing an undesirable 11am start.</p><p>"I feel like I had a very good practice week so far here. I know that I have good tennis in me, and it's about showing that on the match court.</p><p>"I think my performance will improve over the next few matches."</p><p>The win sets up a second round clash with either Frenchman Alexandre Muller or Australia's Adam Walton.</p>
<p>New York: Fourth seed Alexander Zverev out-duelled fellow German Maximilian Marterer 6-2 6-7(5) 6-3 6-2 in the first round of the US Open on Monday.</p><p>Zverev, seeking a debut Grand Slam title after reaching the Australian Open semis and the Roland Garros final this year, flexed his dominant serve as he blasted 21 aces on the Grandstand.</p><p>Unseeded Marterer, the "lucky loser" that entered the draw after Emil Ruusuvuori withdrew last week, captured a close second set but was ultimately overpowered by the world No. 4.</p> .<p>Zverev looked sharp in the first set, breaking his opponent's serve in the opening game before Marterer battled back to claim a back-and-forth second set in a tiebreak.</p><p>The big-serving Zverev looked frustrated at times, tossing his racket at the start of the third set after committing one of 44 unforced errors.</p><p>Zverev called his topsy-turvy performance in the year's final major a typical opening round for him, and said he expects to shore up his game in upcoming matches.</p> .<p>"I'm not usually the type of player that plays extremely well in first-round matches," Zverev said, citing an undesirable 11am start.</p><p>"I feel like I had a very good practice week so far here. I know that I have good tennis in me, and it's about showing that on the match court.</p><p>"I think my performance will improve over the next few matches."</p><p>The win sets up a second round clash with either Frenchman Alexandre Muller or Australia's Adam Walton.</p>