400 Years Since 1619: Coco Gauff Had a Good Run, Y'all. But She's Out After Australian Open Defeat

At 15-years old, Coco Gauff is the youngest pro-tennis player to beat a reigning title holder at a Grand Slam tournament since 1991 and is the youngest to reach the last 16 at the Australian Open since Martina Hingis in 1996, according to ABC.