Tony Reagins, Major League Baseball's evp of baseball and softball development, said MLB saw potential in Athletes Unlimited almost two years ago, but wanted to get to know its leadership and get a sense of whether or not it was built for longevity-which had been an issue for professional softball leagues in the past.

Major League Baseball is investing in Athletes Unlimited to support its softball league that will debut next month, marking the first time MLB will have a comprehensive partnership with a professional women’s sports league.

For the first time, Major League Baseball is investing in a professional women’s softball league. The four-team AUSL will play in 10 cities this summer.