Aryna Sabalenka held off 19-year-old Vicky Mboko 6-1, 7-6 (1) to advance to an Australian Open quarterfinal against another teenager, 18-year-old Iva Jovic. The 29-seeded Jovic overwhelmed Yulia Putintseva 6-0, 6-1 in 53 minutes as she moved into the last eight in a Grand Slam for the first time. She's been getting some good advice from 24-time major winner Novak Djokovic during the tournament. Coco Gauff, 21, is into the Australian Open quarterfinals for the third straight year. And so is men's No. 1 Carlos Alcaraz, who had a 7-6 (6), 6-4, 7-5 win over No. 19-seeded Tommy Paul. He's also been looking to Djokovic for inspiration on his serve.