Victoria Azarenka and Coco Gauff are out of the French Open, while there was bad blood between Kiki Bertens and Sara Errani in Paris.
The cold weather in Paris was an issue for Victoria Azarenka but nothing could spoil Simona Halep's birthday celebrations.
Naomi Osaka is not at the French Open, giving her rivals the opportunity to stake their own claims as the next Serena Williams.
It was a day to forget at the Internazionali d'Italia for Australian Open champion Sofia Kenin, as she lost without winning a game.
There was a lengthy rain delay during Garbine Muguruza's match with Sloane Stephens, but the Spaniard adapted and overcame.
Naomi Osaka made a winning start at Flushing Meadows, where Karolina Pliskova triumphed and Coco Gauff was eliminated.
For the first time in her career, American teenager Coco Gauff lost in the first round of a grand slam.
Venus Williams and Coco Gauff both lost in the first round of the WTA Premier event on Saturday.
Coco Gauff was comfortably beaten by Maria Sakkari in the first round of the Western & Southern Open on Saturday.
After dispatching Serena Williams in the quarter-finals, Shelby Rogers could not find a way past Jil Teichmann, who won comfortably.