Kategori:Idrottsligor grundade 1920
Sidor i kategorin "Idrottsligor grundade 1920"
E
Evergreen konferens
L
Lega Basket Serie A
Louisiana State Baseball League
N
National Football League
Negro National League (1920–1931)
Negro Southern League (1920–1936)
Northeast Iowa Conference
P
Piedmont League
S
Slovenska republikens fotbollsliga
South Dakota League
South London Football Alliance
Southern Combination Football League
Sunshine Coast Gympie Rugby League
U
United States Amateur Hockey Association
W
West Texas League