 Kotz was also a member of the ILF World Champion US squads for the 1986 and 1990 World Lacrosse Championships, teaming with John Tucker, Larry Quinn, Tony Resch and Dave Pietramala.Brad was one of the major early draws for indoor lacrosse, playing professionally from 1987 to 1991 with the Major Indoor Lacrosse League Washington Wave and with the Philadelphia Wings, and winning two championships with the Wings.He led the league in scoring in 1989 and was named first team All-Pro in 1990.