FILE - In this March 5, 2021, file photo, Claressa Shields, left, hits Marie-Eve Dicaire with a left during the fifth round of a boxing bout for the women's super welterweight title in Flint, Mich. Shields did it all in boxing. Two-time Olympic gold medalist. Professional titles in three weight classes. Now she'll try to conquer MMA, starting with her pro debut for Professional Fighters League on Thursday night, June 10, 2021, in Atlantic City, N.J. (AP Photo/Carlos Osorio, File)

FILE - In this March 3 2021, file photo, boxers Claressa Shields speaks during a news conference in Flint, Mich. Shields did it all in boxing. Two-time Olympic gold medalist. Professional titles in three weight classes. Now she'll try to conquer MMA, starting with her pro debut for Professional Fighters League on Thursday night, June 10, 2021, in Atlantic City, N.J. (Jake May/The Flint Journal via AP, File)

FILE - In this March 5, 2021, file photo, Claressa Shields holds her championship belts after defeating Marie-Eve Dicaire by decision for the women's super welterweight boxing title in Flint, Mich. Shields did it all in boxing. Two-time Olympic gold medalist. Professional titles in three weight classes. Now she'll try to conquer MMA, starting with her pro debut for Professional Fighters League on Thursday night, June 10, 2021, in Atlantic City, N.J. (AP Photo/Carlos Osorio, File)