Caroline Garcia's French Open run is over following a quarter-final defeat to Karolina Pliskova.
"I feel like I can play well on any surface," said Caroline Wozniacki after reaching the French Open quarter-finals.
Belinda Bencic fell just short in the Luxembourg Open final as Julia Goerges took home the trophy.
Tie-breaks will settle matches at Wimbledon from 2019 onwards when opponents are locked at 12-12 in the final set.
Simona Halep said it was a "tough decision" not to play in Singapore next week, but the world number one is looking at the bigger picture.