Sabalenka, 27, became the fifth woman to win Indian Wells and Miami titles in one year.
Swiatek said, “Obviously, she had a lot of boyfriends, so we know all about that. Hopefully, this one sticks.”
Iga Swiatek and Jannik Sinner made commanding starts at the U.S. Open on Tuesday, easing past their opponents at Arthur Ashe Stadium.
Swiatek is now the only active WTA Tour player to hold Grand Slam titles on all three surfaces.
Svitolina will next face world number one Iga Swiatek for a place in the semi-finals.
Novak Djokovic will have to cancel his day off and work overtime after falling foul of Wimbledon’s stubborn scheduling.
The Williams sisters have a remarkable record of winning all 14 grand slam doubles finals they had contested.
“I don’t really care about the ranking. Being in the final, that’s more important, and that’s why I’m playing tennis,” said Kvitova.
