Simona Halep saved a match point before defeating Canadian teen Bianca Andreescu 3-6, 7-6, 6-3 at the WTA Finals in Shenzhen.
Both players sought medical treatment during the match, with Halep getting her foot treated while Andreescu had a lower back problem.
Elsewhere, defending champion Elina Svitolina stretched her unbeaten run at the season-ending tournament with a 7-6, 6-4 win over Karolina Pliskova.
Halep and Svitolina are now 1-0 in the Purple Group, while Andreescu and Pliskova are 0-1.
75th Formula 1 season debuts this weekend
The Formula 1 season kicks off in Australia this weekend, setting the stage for a championship battle that will unfold across 24 races before reaching its conclusion at the Etihad Airways Abu Dhabi Grand Prix (December 4-7) at Yas Marina Circuit.
Barca's Gavi left out of Spain squad, Real's Asencio gets first call-up
Real Madrid defender Raul Asencio has earned his first call-up from Spain manager Luis de la Fuente on Friday for their two-leg Nations League quarter-final against the Netherlands.
Alexander-Arnold ruled out of League Cup final
Liverpool boss Arne Slot will not have Trent Alexander-Arnold available when they defend their League Cup title against Newcastle United on Sunday at Wembley in a blow to a squad already missing two defenders through injury.
Rashford and Henderson included in Tuchel's England squad
New England coach Thomas Tuchel recalled striker Marcus Rashford and midfielder Jordan Henderson as he raised eyebrows with his first squad announcement on Friday.
Swiatek to face Russian teen Andreeva in Indian Wells semi-finals
Two-time Indian Wells champion Iga Swiatek avenged her shock Paris Olympics loss to Zheng Qinwen with a 6-3 6-3 win over the Chinese eighth seed on Thursday, setting up a semi-final against 17-year-old Russian Mirra Andreeva in the California desert.
The Rock and Chris Evans: A Christmas Surprise!
It arrived: The UAE's First Mega Music Festival at Expo City Dubai!
Get the latest UAE and world news from our award winning team of journalists. The ARN News Centre is the country's most trusted source of information.
One of the most talked about comedians in the world takes over The Kris Fade Show. Watch the full interview here...
