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.
100 horses to compete in 30th Dubai World Cup
The 30th Dubai World Cup meeting at Meydan Racecourse on Saturday, March 28, will see 100 horses from leading international stables competing across nine races for total prize money of $30.5 million.
Mercedes driver Antonelli storms to second consecutive pole in Japan
Italian teenager Kimi Antonelli stormed to a second straight pole position in qualifying for the Japanese Grand Prix ahead of teammate George Russell on Saturday to lock out the front row for Mercedes for a third consecutive race.
Tiger Woods out on bail after arrest on suspicion of DUI
Former world number one golfer Tiger Woods was arrested on a charge of driving under the influence after his Land Rover rolled over on a two-lane road near his Jupiter Island home in Florida on Friday afternoon, the Martin County Sheriff's Office said.
Iranian players hold schoolbags in protest over slain girls
Iran’s men's national football team wore black armbands and held schoolbags as their anthem played ahead of Friday's clash with Nigeria, in what a team official said was a protest over the killing of schoolgirls on the first day of the Iran war.
Barcelona's Raphinha to miss Champions League quarters due to injury
Barcelona attacker Raphinha will miss their Champions League quarter-final tie with Atletico Madrid early next month after suffering a hamstring injury on international duty with Brazil, the LaLiga side said.
