2 Americans, Raducanu through to Australian Open 2nd round


              Spectators watch the first round match between Emma Raducanu of Britain and Tamara Korpatsch of Germany at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Ng Han Guan)
            
              Katerina Siniakova of the Czech Republic plays a forehand return to Coco Gauff of the U.S. during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Aaron Favila)
            Coco Gauff of the U.S. celebrates after defeating Katerina Siniakova of the Czech Republic in their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Aaron Favila) Jessica Pegula of the U.S. plays a forehand return to Jaqueline Cristian of Romania during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Dita Alangkara) Jessica Pegula of the U.S. plays a backhand return to Jaqueline Cristian of Romania during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Dita Alangkara)