National Softball League was created in 2009.
Vienna Girls Softball League was created in 1965.
There are 14 teams in the National Pro Fastpitch Softball League.
National Softball Association Hall of Fame was created in 1992.
Yes there is a professional softball league. It's called the NPF, National Pro Fastpitch.
National League A was created in 1999.
A-League National Youth League was created in 2008.
National Security League was created in 1914.
National Puzzlers' League was created in 1883.
National Rugby League was created in 1997.
Belgian National League was created in 1975.
National Service League was created in 1902.
National Rookie League was created in 2000.