World number one Simona Halep has withdrawn from the WTA Finals as she has not fully recovered from a back injury.
Kiki Bertens will make her debut in the end-of-season tournament in Singapore next week after Halep pulled out on Thursday.
The French Open champion sustained a herniated disc in a practice session at the Wuhan Open last month, but vowed to play in the WTA Finals.
Halep withdrew from the Kremlin Cup this week as she continues to be troubled by the injury and is taking no risks.
"The decision was tough for sure," Halep, who had flown to Singapore ahead of the tournament, told WTA Insider. "It's always difficult to withdraw from a big tournament. Actually, I think it's the first time in my life. So it was a tough decision but it's better for my health.
"Darren [Halep's coach Cahill] was 100 per cent to withdraw because he's worried about the back and it's better to put the health first, always.
"He always did that with me since we started. So he was more sure than me that we had to pull out. Then when I heard that he agreed with this it was easier for me to take the decision.
"My back is not okay. I didn't practice for the last four weeks. I'm not ready to compete at this level and I'm still sore. It's not easy to go on court and compete at this moment.
"It's the same back problem from Wuhan and I need a break to heal it. I need three to four weeks doing exercises and having a break and it should be fine. So I have enough time now to get ready for the off-season and to get ready for the next year."
Halep ends the season with three titles, including her maiden grand slam triumph at Roland Garros.
Bertens steps in for Halep as the world number 10 is ninth in the Race to Singapore.
23 de abril 2019
|Cowboys´ Cooper describes relationship with Prescott|
|Zola suggests Chelsea to report Burnley after Sarri was allegedly ´offended´|
|Nets´ Dudley doubles down on Simmons comments|
|Hudson-Odoi says his season is over with ruptured Achilles tendon|
|Arthur backs Pakistan to mount World Cup challenge|
|David Luiz accuses Burnley of playing ´anti-football´|
22 de abril 2019
|Pogba blasts Manchester United for ´disrespectful´ performance in Everton humbling|
|NFL Draft 2019: Five sleeper prospects|
|NFL Draft 2019: Five potential first-round surprises|
|Chelsea 2 Burnley 2: Kante injured as Sarri´s men waste chance to go third|
|Kante off injured ahead of crucial period for Chelsea|
|Ruthless Saints thrash Hull FC, Warrington thump Rovers|
|Pant sends Capitals top despite Rahane hundred|
|AFC Champions League Review: Xavi stars in last-gasp Al Sadd victory|
|Brentford 2 Leeds United 0: Automatic promotion hopes hanging by a thread for Bielsa|
|Verdasco edges ahead of old rival Lopez in Barcelona, Mayer books Nadal date|
|Martic rallies to oust Zidansek in Istanbul|
|Heavyweight Ali pays the Price for bite|
|Championship Review: Sheffield United put the pressure back on Leeds, Norwich City held|
|Valverde to be patient with returning Barcelona star Dembele|
|Valencia winger Cheryshev to miss Copa del Rey final|
|DaMarkus Lodge relishing chance to prove himself as all-round receiver|
|Hassan named in Afghanistan World Cup squad|
|Bayern ´not easy´ for Sanches, accepts Kovac|
|Sissoko could miss two weeks – Pochettino|
|Pakistan announce Shadab Khan treatment plans|
|Coman and Gnabry impressing Bayern Munich boss Kovac|
|Khan will not retire on Crawford loss|
|Pavard: Bayern signed me because I am one of the best|
|Eels open new home by thumping tame Tigers|
|Folau´s Rugby Australia hearing set for May 4|
|Henderson urges Liverpool to ´keep believing´ in title race|
|McCollum driven by past Blazers failure|
|Hertha confirm broken ankle for rumoured Bayern target Stark|
|Young promises United response in Manchester derby|
|Mbappe won´t leave PSG, insists Tuchel|
|Warriors and Trail Blazers extend leads, Celtics reach Conference semis|
|Red Sox, Yankees claim extra-inning wins to continue turnarounds|
|Matic: Man United didn´t have leaders against Everton|
|Tuchel calls for Champions League patience after Ligue 1 glory|
|MLS Review: Vela leads LAFC rout, New York end winless start|
|Kerr backs Warriors star Curry to bounce back quickly|
|76ers star Butler, Nets´ Dudley fined after playoff clash|
|We always feel the same happiness – Al-Khelaifi revels in PSG´s Ligue 1 success|
|Paris Saint-Germain 2018-19: More goals and tighter at the back – the numbers behind Tuchel´s triump|
|Warriors´ Thompson says he ended slump by jumping in ocean|
|Maiden winner Pan claims RBC Heritage as Johnson capitulates|
|We cannot influence Manchester derby, neither can United – Klopp trolls Solskjaer´s men|
|Stevens proud of Celtics for keeping foot on the accelerator to sweep Pacers|
|DeRozan fined $25k for throwing ball at referee|
|Garcia and Mladenovic put past feud behind them to send France into Fed Cup final|
21 de abril 2019
|I am sure to stay at PSG – Mbappe insists he is not Real Madrid-bound|
|Special Foden has something that´s difficult to find – Guardiola|
|Sarri: Chelsea´s League Cup run on par with Tottenham´s heroics|
|Munster condemn pitch invader who confronted Vunipola|
|NHL awards 2019: Brent Burns, Mark Giordano, Victor Hedman named Norris Trophy finalists|
|Paris Saint-Germain 3 Monaco 1: Mbappe leads title celebrations with hat-trick as Neymar returns|
|Celtics sweep Pacers to advance to semi-finals|
|Neymar makes return from injury as substitute against Monaco|
|Words mean little – De Gea apologetic for disastrous Manchester United performance|
|PSG in Notre Dame jersey tribute against Monaco|
|Benzema the world´s best striker – Zidane|
|Patel the hero as Challengers survive Dhoni´s devastating display|
|Injured PAOK captain comes off bench to celebrate club´s first title in 34 years|
|It is in our hands – Emery confident on Arsenal´s Champions League hopes|
|Liverpool prove to be a cut above Cardiff thanks to Klopp´s pitch-perfect plan|
|Neymar back on the bench for PSG´s clash with Monaco|
|Ringrose: ´Incredible´ Saracens awaiting Leinster in final|
|Hodgson prepared to fight to keep Zaha at Crystal Palace|
|All we can do is keep the pressure on Man City, admits Milner|