Melbourne - Coco Gauff's bid for history at the Australian Open ended in tears in the last 16 on Sunday as the 15-year-old crashed out in three sets to fellow American Sofia Kenin.
"I just did the best I can. I just tried to take it like any other match," said Kenin.
Gauff, the youngest player in the draw, departed the court in tears.
The current record-holder is Martina Hingis, who triumphed at the 1997 Australian Open aged 16 years and 105 days.
The 67th-ranked Gauff recovered to gain parity for 4-4 and they went to the tie-break after Kenin saved set point.
A resurgent Kenin - the determination etched on her face - broke at the third time lucky to lead 3-1, triggering a rare show of anger from the teenager.
She went out in the fourth round to eventual champion Simona Halep, but a star was born.
Novak Djokovic (SRB x2) bt Diego Schwartzman (ARG x14) 6-3, 6-4, 6-4
Sofia Kenin (USA x14) bt Coco Gauff (USA) 6-7 (5/7), 6-3, 6-0