Defending women's champion Iga Swiatek continued to look impressive, downing Marta Kostyuk in the night session, while fourth seed Sofia Kenin was beaten by Maria Sakkari and 17-year-old Coco Gauff reached her first grand slam quarter-final.
Picture of the day
Stat of the day
Friends and rivals
Coco winning off court too
Gauff was thrilled to be through to the quarter-finals, but perhaps even happier to be at the top of the family leaderboard for the card game UNO.
Chip off the block
There was a notable first for one of the most famous names in tennis as Leo Borg, 18-year-old son of Bjorn, won his first match at a junior grand slam. Leo, who played his father as a child in the 2017 Borg Vs McEnroe film, accepts there is no point getting annoyed at comparisons.
He said: "I was having a hard time when I was a little bit younger. I'm getting used to it and I can control it more. I just have to control it because it's going to be following me all my tennis career. It doesn't bother me. I'm just focusing on my goal and my tennis."
Women: Sofia Kenin (4), Ons Jabeur (25)
Men: Jannik Sinner (18)
Who's up next?
The quarter-finals get under way on Tuesday, and Daniil Medvedev and Stefanos Tsitsipas have to wait until the night session for the match of the day.
Alexander Zverev will take on outsider Alejandro Davidovich Fokina while the women's quarter-finals feature four unexpected names in Anastasia Pavlyuchenkova, Elena Rybakina, Paula Badosa and Tamara Zidansek.
Joe Salisbury bids to reach another grand slam final in mixed doubles partnering American Desirae Krawczyk.