Coco Gauff, the defeater of Magdalena Fręch in the 1/8 final, has advanced to the semi-finals of the Grand Slam Australian Open in Melbourne. The number four seeded American tennis player defeated Ukraine's Marta Kostiuk today. In the men's section of the tournament, Serbian tennis player Novak Djokovic advanced to the semi-finals. Today, he defeated American Taylor Fritz, seeded number 12.more