section_path: Career/2023: United Cup champion, top 10
section_name: 2023: United Cup champion, top 10
paragraph_text: 2023: United Cup champion, top 10
  
  Playing as part of Team USA at the first edition of the United Cup, Keys won all five of her matches, defeating Marie Bouzková, Jule Niemeier, Katie Swan, Magda Linette, and Lucia Bronzetti en route to the title. Her success at this event allowed her to go back to world No. 10 in the rankings. This marked Keys' first return to the top ten since August 2019. At the Australian Open, seeded No. 10, Keys lost in the third round to Victoria Azarenka in three sets after winning the first set 6–1. Keys had 39 unforced errors compared to 18 for Azarenka. At Dubai, she reached the quarterfinals defeating fourth seed Caroline Garcia, her first top-10 win of the season, and Azarenka, both matches in straights sets.
  
  In Charleston, she reached the quarterfinals defeating eighth seed Magda Linette but lost to third seed Daria Kasatkina. In Rome, she moved into the fourth round after this time a walkover from Azarenka, having defeated Magdalena Fręch in the second round. In the French Open, she lost in the second round; afterwards, she began to be coached by her fiancé and longtime boyfriend, Bjorn Fratangelo.
  
  At the Eastbourne International, she reached the final after a nine-year gap at this tournament, defeating compatriot and fifth seed Coco Gauff, her 24th top-10 win. She won her seventh title defeating ninth seed Daria Kasatkina in a match with the second longest tiebreak of the season without losing a set. She continued her good form to reach the quarterfinals at Wimbledon, defeating wildcard Sonay Kartal, qualifier Viktorija Golubic, Marta Kostyuk and qualifier Mirra Andreeva.
  
  She reached her first major semifinal since the 2022 Australian Open and third at the US Open defeating, in two consecutive matches, top 10 players Jessica Pegula and reigning Wimbledon champion Marketa Vondrousova. Despite being up 6-0 and a break against Aryna Sabalenka, she lost her semifinal match in three sets, with tiebreakers in the last two.
  
  Keys finished the year ranked No. 12.
  
  Playing as part of Team USA at the first edition of the United Cup, Keys won all five of her matches, defeating Marie Bouzková, Jule Niemeier, Katie Swan, Magda Linette, and Lucia Bronzetti en route to the title. Her success at this event allowed her to go back to world No. 10 in the rankings. This marked Keys' first return to the top ten since August 2019. At the Australian Open, seeded No. 10, Keys lost in the third round to Victoria Azarenka in three sets after winning the first set 6–1. Keys had 39 unforced errors compared to 18 for Azarenka. At Dubai, she reached the quarterfinals defeating fourth seed Caroline Garcia, her first top-10 win of the season, and Azarenka, both matches in straights sets.
  
  In Charleston, she reached the quarterfinals defeating eighth seed Magda Linette but lost to third seed Daria Kasatkina. In Rome, she moved into the fourth round after this time a walkover from Azarenka, having defeated Magdalena Fręch in the second round. In the French Open, she lost in the second round; afterwards, she began to be coached by her fiancé and longtime boyfriend, Bjorn Fratangelo.
  
  At the Eastbourne International, she reached the final after a nine-year gap at this tournament, defeating compatriot and fifth seed Coco Gauff, her 24th top-10 win. She won her seventh title defeating ninth seed Daria Kasatkina in a match with the second longest tiebreak of the season without losing a set. She continued her good form to reach the quarterfinals at Wimbledon, defeating wildcard Sonay Kartal, qualifier Viktorija Golubic, Marta Kostyuk and qualifier Mirra Andreeva.
  
  She reached her first major semifinal since the 2022 Australian Open and third at the US Open defeating, in two consecutive matches, top 10 players Jessica Pegula and reigning Wimbledon champion Marketa Vondrousova. Despite being up 6-0 and a break against Aryna Sabalenka, she lost her semifinal match in three sets, with tiebreakers in the last two.
  
  Keys finished the year ranked No. 12.