Axios

One of the greatest boxers of all time will return to the ring this weekend — to fight a social media star.

Driving the news: 44-year-old Floyd Mayweather will fight 26-year-old Logan Paul in an exhibition bout on Sunday at Miami's Hard Rock Stadium ($49.99 on Showtime PPV).

Eight states this year have banned transgender kids from playing on sports teams that match their gender identity, per data from the ACLU and bipartisan LGBTQ advocacy group Freedom For All Americans.

Why it matters: So far, almost all of the record number of bills targeting trans youth that have actually passed are focused on sports, suggesting that more laws of this kind could be incoming.

Uruguay, Argentina, Brazil and Peru currently have some of the highest coronavirus infection and death rates per capita in the world.

Why it matters: Vaccine access has been uneven in the region, which has mostly depended on Russian and Chinese vaccines. Just under 20% of the area’s population has been immunized.

10,000 volunteers working to organize the Tokyo Olympics next month have quit, Toshiro Muto, the CEO of the Tokyo organizing committee, told reporters Wednesday, the according to the New York Times.

Why it matters: The games have been under pressure to cancel amid low vaccination rates and a surge of active COVID-19 cases in Japan. Scientists have warned that "canceling the games may be the safest option" and a recent poll by Japan's Asahi Shimbun newspaper found 83% of voters wanted the games to be postponed or canceled.

Brazil has stepped in to host this month's Copa América, but the issues that caused the former hosts to drop out are roughly as bad in Brazil.

The backdrop: The soccer tournament — originally set for last summer in Colombia and Argentina — was delayed a year by the pandemic. It's now scheduled to begin on June 13.

A 1914 Babe Ruth "pre-rookie" card has been valued at $6 million, making it the most expensive sports trading card of all time.

What's next: The privately-owned card will be partially sold on Collectable, a fractional investing platform where users can buy shares of sports memorabilia.