"It wasn't an easy match, she plays unbelievable and I'm not feeling my best today," Jabeur said in her on-court interview before the crowd sang "Happy Birthday" to her. While serving with a 4-3 lead Jabeur told the chair umpire she was having trouble breathing and then went on to lose the game as Osorio broke to get the match back on serve. A determined Jabeur dug deep and won three consecutive games to wrap up the opening frame in 59 minutes before leaving the Louis Armstrong Stadium court. Both players struggled to defend their serve in the second set where Jabeur broke for a 4-3 lead and, with the finish line in sight, turned aside two break points to hold for a 5-3 advantage. Reporting by Frank Pingue in Toronto Editing by Toby DavisOur Standards: The Thomson Reuters Trust Principles.

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Persons: Colombia's Camila Osorio, Mike Segar, Jabeur, Osorio, Louis Armstrong, Czech Linda Noskova, Frank Pingue, Toby Davis Organizations: Tennis, U.S, Wimbledon, Louis Armstrong, Tunisian, Louis, Colombian, Thomson Locations: Flushing Meadows , New York, United States, Czech, Toronto