With the plan in action, Badosa captured the moment a baffled Sabalenka was confronted with a sparkler cake and presented a giant “S”-shaped balloon.
Sabalenka addressed the prank on Instagram later that evening, mischievously promising a “nice present” for Badosa in time for her November 15 birthday.
“This one was really funny,” Sabalenka wrote on her Instagram stories, “still can’t stop laughing.”