Darren Cahill said Simona Halep was playing like a 'disgrace' during the WTA Finals, and the Romanian accepted her coach's criticism.
Fourth seed Aryna Sabalenka upstaged Kiki Bertens 6-4 6-2 as she closed out her singles season with victory in Zhuhai.
Kiki Bertens will face Aryna Sabalenka in the final of the WTA Elite Trophy after Zheng Saisai and Karolina Muchova made semi-final exits.
Belinda Bencic will make her first appearance at the lucrative WTA Finals in China later this month, as Serena Williams misses out.
The door is open for Belinda Bencic to qualify for the WTA Finals after Kristina Mladenovic's defeat of Kiki Bertens in Moscow.
Russian Veronika Kudermetova claimed the biggest win of her career in Moscow, beating Elina Svitolina to reach the quarter-finals.
Still just 15 years old, Coco Gauff set her eyes on the best Halloween costume on the WTA Tour after claiming a reported $43,000 in Linz.
Heather Watson was defeated in straight sets by Rebecca Peterson in the final of the Tianjin Open on Sunday.
Jelena Ostapenko forced Coco Gauff into a deciding set but could not stop the brilliant 15-year-old from claiming Linz Open glory.
After beating Andrea Petkovic in straight sets at the Linz Open, reaching her first WTA Tour final, Coco Gauff hailed her rapid rise.