In her last Grand Slam quarterfinal, the Spaniard fell apart in New York. She took the lessons to Gauff in Melbourne, and won.

Spain's Paula Badosa stunned error-prone third seed Coco Gauff 7-5 6-4 in the quarter-finals of the Australian Open on Tuesday to reach the last four at a Grand Slam for the first time. It was a thoroughly deserved victory for Badosa on a sunbathed Rod Laver Arena as she set up a meeting with double defending champion Aryna Sabalenka or Anastasia Pavlyuchenkova.

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