Top-seeded Alexander Zverev of Germany beat Matteo Arnaldi of Italy 6-7 (5), 6-3, 6-2 on Thursday night in the third round of the National Bank Open to reach 500 match victories.

Alexander Zverev fired a ball into the hazy, evening sky — and right out of Sobeys Stadium in frustration. A few years back, the damage might have been a lot worse. The National Bank Open favourite had just lost the tiebreak in a knife-edged first set off a shot that clipped the net with a semifinal berth on the line.