Wimbledon champion Simona Halep has retired from the Wuhan Open after suffering a lower back injury.
Despite the intervention of a physiotherapist, she was forced to withdraw when trailing 5-4 in the first set against the Kazakh wildcard.
Meanwhile, Ashleigh Barty defeated Sofia Kenin 6-3, 7-5 to secure a place in the quarterfinals.
Third seed Elina Svitolina also progressed against Svetlana Kuznetsova.
Inter secure Serie A title in heated win over Milan
Inter Milan won their 20th Serie A title on Monday after a 2-1 win at AC Milan gave Simone Inzaghi's side an unassailable lead in the standings.
Bellingham's strike hands Real comeback win over Barcelona
LaLiga leaders Real Madrid's pursuit of a record-extending 36th Spanish title gathered momentum after Jude Bellingham scored a goal in added time to secure a 3-2 comeback win over Barcelona on Sunday.
Kohli unhappy with umpire after new full toss review method rules him out
Virat Kohli was left fuming when a new method applied to the ball tracking technology ruled him out on a full toss delivery that he thought went above his waist in Sunday's loss at Kolkata Knight Riders.
Man Utd overcome Coventry in FA Cup semi-final classic
Manchester United survived one of the most astonishing FA Cup semi-final comebacks ever to beat second-tier Coventry City on penalties after a spellbinding clash ended 3-3 after extra time at Wembley Stadium on Sunday.
Rybakina strolls to Stuttgart title
Elena Rybakina had little trouble in seeing off Marta Kostyuk 6-2 6-2 to win the Stuttgart Open on Sunday, her third title this year.
