British number one Emma Raducanu is out of the Australian Open after losing in straight sets to Coco Gauff in a gripping second-round match.
Raducanu, ranked 77th in the world, acquitted herself very well against the American seventh seed but a lack of matches told in a 6-3 7-6 (7-4) defeat.
The 20-year-old had battled an ankle injury before the Melbourne major.
Cameron Norrie, Britain's leading men's player, reached the third round after a late-night win over Constant Lestienne.
At 01:28 local time, 11th seed Norrie completed a 6-3 3-6 7-6 (7-2) 6-3 victory over the French world number 55, who was making his Grand Slam main-draw debut at the age of 30.