When it comes to winning advertisers, few athletes have the pull of tennis aces Naomi Osaka and Serena Williams.

The 24-year-old Osaka has more than 20 corporate partners, making $58 million before taxes and agents’ fees over the last 12 months from brands including Nike, Mastercard and Louis Vuitton. That’s the fourth-best off-field total among the world’s top athletes, behind only Roger Federer, LeBron James and Tiger Woods—and ahead of names like Lionel Messi, Cristiano Ronaldo and Tom Brady. Williams, 40, has more than a dozen endorsement deals of her own, pushing her off-court haul to $45 million, tenth-best in the world. Read More