WThe Major League Baseball Players Association is the collective bargaining representative for all current Major League Baseball players. All players, managers, coaches, and athletic trainers who hold or have held a signed contract with a Major League club are eligible for membership in the Association.
WThe MLS Players Association, also referred to as the MLSPA, is the union of professional Major League Soccer players. The MLS Players Association serves as the exclusive collective bargaining agreements representative for all current players in MLS.
WThe National Basketball Players Association (NBPA) is a labor union that represents National Basketball Association (NBA) players. It was founded in 1954, making it the oldest trade union of the four major North American professional sports leagues. However, the NBPA did not get recognition by NBA team owners until ten years later. Its offices are located in the historic Park and Tilford Building in New York City. It was briefly a trade association after dissolving as a union during the 2011 NBA lockout.
WThe National Football League Players Association, or NFLPA, is a labor union representing National Football League (NFL) players. The NFLPA, which has headquarters in Washington, D.C., is led by president J. C. Tretter and executive director DeMaurice Smith. Founded in 1956, the NFLPA is the second-oldest labor union of the four major professional sports leagues; it was established to provide players with formal representation to negotiate compensation and the terms of a collective bargaining agreement (CBA). The NFLPA is a member of the AFL–CIO, the largest federation of unions in the United States.
WThe National Women's Soccer League Players Association, is the officially recognized union of players in the National Women's Soccer League (NWSL) who are not federation players.
WNHLPA is the labour union for the group of professional hockey players who are under Standard Player Contracts to the 31 member clubs in the National Hockey League (NHL) located in the United States and Canada. The association represents its membership in all matters dealing with their working conditions and contractual rights as well as serving as their exclusive collective bargaining agent.
WThe National Lacrosse League (NLL) is a men's professional box lacrosse league in North America. Headquartered in Philadelphia, Pennsylvania, the NLL currently has thirteen teams: eight in the United States and five in Canada. The NLL ranks third in average attendance for pro indoor sports worldwide, behind only the NHL and NBA. Unlike other box lacrosse leagues which play in the summer, the NLL plays its games in the winter and spring, from December to June. Each year, the playoff teams battle for the National Lacrosse League Cup. The NLL has averaged between 8,900 and 10,700 spectators per game each year since 2004.