Melbourne - Defending champion Novak Djokovic swept into the Australian Open quarter-finals but 15-year-old Coco Gauff exited in tears on Sunday after her quest to become the Open era's youngest Grand Slam winner came screeching to a halt.
The Serb's reward is a match-up with big-serving Canadian Milos Raonic, who is back in form after a run of injuries and dismissed 2018 finalist Marin Cilic 6-4, 6-3, 7-5.
Gauff's giant-killing Australian debut generated intense hype as she attempted to become the youngest Major winner in the post-1968 Open Era, breaking the record set by a 16-year-old Martina Hingis in 1997.
"The thing I'm most proud of myself is how I handled it on the court," said Gauff, who shed tears after her defeat. "Even though today I lost a set 6-0, I was still believing I could win it."
Jabeur, the highest-ranked Arab woman in history -- she reached a career-high 51 last year -- is the first Tunisian woman to win a main-draw match at the Australian Open.
Roger Federer plays Hungary's Marton Fucsovics in the late match as he seeks a record 15th appearance in the quarter-finals, two days after going the distance in a five-set thriller with John Millman.
Novak Djokovic (SRB x2) bt Diego Schwartzman (ARG x14) 6-3, 6-4, 6-4
Ons Jabeur (TUN) bt Wang Qiang (CHN x27) 7-6 (7/4), 6-1