Ahead of Paula Badosa's showdown against Coco Gauff at the Australian Open, boyfriend Stefanos Tsitsipas has already given his verdict on the American prospect

In her last Grand Slam quarterfinal, the Spaniard imploded in New York. She is taking the lessons into her match with Gauff in Melbourne.

No. 11 seed Paula Badosa of Spain upset American Coco Gauff, the No. 3 seed, in straight sets at the Australian Open quarterfinals.

Coco Gauff is set to take on Paula Badosa in the quarter-finals of the Australian Open on Tuesday, and Stefanos Tsitsipas has long been aware of the danger the American poses

Coco Gauff has lost in the Australian Open quarterfinals to Paula Badosa 7-5, 6-4. MELBOURNE, Australia — Coco Gauff's retooled forehand and serve abandoned her in the worst way and at the worst time at the Australian Open.

America's Coco Gauff faces Spain's Paula Badosa in the quarterfinals at the Australian Open tonight. Here's how to tune in.