The Grand Slam king will pass on Paris, which leaves Turin in some doubt.
Sporting a new look, Taylor Fritz will play for a historic three-peat in Delray Beach.
"I need a little more time before I am match fit," Emma Raducanu said.
The Russian makes it six straight appearances at the ATP Finals.
The trial has ended. Starting in 2025, off-court coaching will become official.
"For me to play four consecutive matches and get four consecutive time violations is insane," Frances Tiafoe said after topping Cameron Norrie in Vienna today.
Tomas Etcheverry paid and arm and a leg when the chair umpire incorrectly ruled a ball hit his leg before going out.