Major League Baseball is making a major investment in professional women's sports. MLB is partnering with the Athletes Unlimited Softball League — which is made up of the best pro softball players in the United States.

Major League Baseball (MLB) announced on May 29 that they have partnered and invested in Athletes Unlimited Softball League for its inaugural season starting June 7.

Major League Baseball is making a big bet on the business of women's sport, announcing on Thursday its first significant financial investment in a women's professional softball league.