Nadal struggles at times during 4-set win at Australian Open


              Alex Molcan of Slovakia falls onto the court after defeating Stan Wawrinka of Switzerland in their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Ng Han Guan)
            
              Iga Swiatek of Poland plays a backhand return to Jule Niemeier of Germany during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Aaron Favila)
            Frances Tiafoe of the U.S. reacts after defeating Daniel Altmaier of Germany in their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Ng Han Guan) Rafael Nadal of Spain plays a backhand return to Jack Draper of Britain during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Aaron Favila) Rafael Nadal of Spain plays a backhand return to Jack Draper of Britain during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Aaron Favila) Victoria Azarenka of Belarus plays a backhand return to Sofia Kenin of the U.S. in their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Dita Alangkara) Jack Draper of Britain places a bag of ice on his face during his first round match against Rafael Nadal of Spain at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Aaron Favila) Australia's Nick Kyrgios reacts as he announces his withdrawal from the Australian Open with a knee injury at a press conference in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Mark Baker) Danielle Collins of the U.S. plays a forehand return to Anna Kalinskaya of Russia during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Dita Alangkara) 
              Emma Raducanu of Britain plays a forehand return to Tamara Korpatsch of Germany during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Ng Han Guan)
            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) Jaqueline Cristian of Romania plays a forehand return to Jessica Pegula of the U.S. 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) Bianca Andreescu of Canada reacts after winning a point against Marie Bouzkova of the Czech Republic during their first round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 16, 2023. (AP Photo/Ng Han Guan)