http://www.nfl.com/

National Football League

http://www.nba.com/

National Basketball Association

http://mlb.mlb.com/NASApp/mlb/index.jsp

Major League Baseball

http://www.nhl.com/

National Hockey League

http://www.fifa.com/

World Cup Soccer

http://www.usta.com/ 

United States Tennis Association

http://www.pga.com/home/ 

Professional Golfers Association

http://www.usfencing.org/

US Fencing Association

http://www.usavolleyball.org/

USA Volleyball

http://www.usfieldhockey.com/

USA Field Hockey