John Isner wins first-round match
Need the scores from any match played in today's tournaments? Results
Isner had 10 aces and broke his opponent three times to wrap up the match in 67 minutes.
Isner won a historic first-round match at Wimbledon earlier this year that went a total of 183 games and 11 hours, 5 minutes. He will next face another Frenchman, qualifier Adrian Mannarino.
Mannarino had 15 aces and needed eight match points to beat Slovakian Lukas Lacko 6-3, 6-7 (4), 6-4.
Taylor Dent, another big server from the United States, rallied from one set down to beat Romain Jouan of France 6-7 (5), 6-3, 6-4.
Dent lost six consecutive points in the first-set tiebreak but recovered to wrap up the match in 1 hour, 58 minutes after having 20 aces and saving the six break points he faced.
Dent will play fourth-seeded Ivan Ljubicic of Croatia in the second round.
Zverev will next face top seed Nikolay Davydenko of Russia.
Copyright 2010 by The Associated Press