National Pro Fastpitch (NPF), formerly the Women's Pro Softball League (WPSL), was a professional women's softball league in the United States. The teams battled for the Cowles Cup. The WPSL was founded in 1997 and folded in 2001; the NPF revived the league in 2004. A new softball league, the Women's Professional Fastpitch (WPF), launched in 2022, and the NPF disbanded. Teams Timeline of NPF teams Current NPF teams in tan Former NPF members or defunct teams in blue League history On November 21, 2002, WPSL announced a rebranding strategy and official name change to National Pro Fastpitch. Major League Baseball partnered with NPF as its Official Development Partner as a continuation of MLB's efforts to connect with female athletes and women in general. As "Official Development Partner" in 2003, Major League Baseball provided introductions to Major League Baseball Clubs, community partners, broadcast partners and to MLB.com. As part of its long-term sales, marketing and promotional campaign, NPF featured an All-Star Tour in 2003. The tour provided each of the league's expansion team owners with tools to lay the groundwork in their marketplace for the official launch of league play in 2004. In 2004, the league relaunched with six teams in six markets: California Sunbirds in Stockton, California; Arizona Heat in Tucson, Arizona; Texas Thunder in Houston, Texas; Akron Racers in Akron, Ohio ; New England Riptide in Lowell, Massachusetts; and NY/NJ Juggernaut in Montclair, New Jersey. The 2004 season was distinguished by 178 league-wide games, 96 of the best female softball players in the country, the continued support of Major League Baseball as the Official Development Partner of NPF in the category of women's fastpitch softball, NPF playoffs (both best of three series went three games) and the inaugural NPF Championship with the New York/New Jersey Juggernaut capturing the Championship Cowles Cup with a victory over the New England Riptide, fourth-place finisher in the regular season. Today, there are 5 National Pro Fastpitch teams: the Aussie Peppers, the California Commotion, the Chicago Bandits, the Cleveland Comets, and the Canadian Wild. Each team has about 20 players on roster. The league's main goal is to provide entertainment and to secure fast-pitch as a professional sports for decades to come. New ownership (2005) In December 2004, owners of the individual National Pro Fastpitch (NPF) teams announced a plan intended to transition operations of National Pro Fastpitch from the founding Cowles family