Sports league
group of sports teams or individual athletes that compete against each other
Alberta Footy Women's League
Aldershot & District Football League
All American Football League
All Japan Intercollegiate Basketball Championship
Allan Cup Hockey
All-Ireland League
Amateur Football Combination
Amateur Poker Association & Tour
American Amateur Hockey League
American Association
American Football League
American Football League
American Football League
American Football League
American Football League
American Football Women's League
American Negro League
American Premier League
American Professional Football League
American Roller Derby League
American Twenty20 Championship
American West Hockey League
Anglo-Franco-Scottish Friendship Cup
Ankara Football League
Anthracite League
Arizona-Mexico League
Arizona Summer League
Arizona Winter League
Bundesliga (wrestling)
Asian Poker Tour
Assam State Premier League
Atlantic Coast Football League
Atlantic Collegiate Baseball League
Atlantic Junior Hockey League
Atlantic League
Atlantic League
Auckland Roller Derby League
Australian Baseball League
Australian Women's Ice Hockey League
South Devon Football League
Avalon East Senior Hockey League
Ayrshire and Renfrewshire Football League
Babe Ruth League
Serbian First League of Handball for Women
Ballarat Roller Derby League
Ballymena & Provincial Intermediate League
Baltimore Catholic League
Korean Basketball League
West Asian Women's Handball Championship
Northern Premier League Division One North