Korda, 1998 Australian Open champ Petr’s son, in 1st Slam QF


              Jannik Sinner of Italy reacts during his fourth round match against Stefanos Tsitsipas of Greece at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Mark Baker)
            
              Stefanos Tsitsipas of Greece falls during his fourth round match against Jannik Sinner of Italy at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Mark Baker)
            
              Stefanos Tsitsipas of Greece celebrates after defeating Jannik Sinner of Italy during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Mark Baker)
            
              Hubert Hurkacz of Poland, left, congratulates Sebastian Korda of the U.S. following their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Mark Baker)
            
              Jiri Lehecka of the Czech Republic celebrates after winning the third set of his fourth round match against Felix Auger-Aliassime of Canada  at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Asanka Brendon Ratnayake)
            
              Yoshihito Nishioka of Japan, right, congratulates Karen Khachanov of Russia who won their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Ng Han Guan)
            
              Stefanos Tsitsipas of Greece celebrates after defeating Jannik Sinner of Italy during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Ng Han Guan)
            
              Sebastian Korda of the U.S. celebrates after defeating Hubert Hurkacz of Poland during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Aaron Favila)
            
              Jiri Lehecka of the Czech Republic celebrates after winning the third set of his fourth round match against Felix Auger-Aliassime of Canada  at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Asanka Brendon Ratnayake)
            
              Yoshihito Nishioka of Japan, right, congratulates Karen Khachanov of Russia who won their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Ng Han Guan)
            
              Hubert Hurkacz of Poland, left, congratulates Sebastian Korda of the U.S. following their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Mark Baker)
            
              Sebastian Korda of the U.S. celebrates after defeating Hubert Hurkacz of Poland during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Aaron Favila)
            
              Hubert Hurkacz of Poland, left, congratulates Sebastian Korda of the U.S. following their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Mark Baker)
            
              Sebastian Korda of the U.S. celebrates after defeating Hubert Hurkacz of Poland during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Aaron Favila)
            
              Sebastian Korda of the U.S. plays a forehand return to Hubert Hurkacz of Poland during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Mark Baker)
            
              A ball kid holds an official tournament ball during the fourth round match between Hubert Hurkacz of Poland and Sebastian Korda of the U.S. at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Aaron Favila)
            
              Sebastian Korda of the U.S. reacts as he plays against Hubert Hurkacz of Poland during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Aaron Favila)
            
              Hubert Hurkacz of Poland plays a backhand return to Sebastian Korda of the U.S. during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Mark Baker)
            
              Sebastian Korda of the U.S. celebrates after defeating Hubert Hurkacz of Poland during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Sunday, Jan. 22, 2023. (AP Photo/Aaron Favila)
Korda, 1998 Australian Open champ Petr’s son, in 1st Slam QF