RoboCup Standard Platform League was created in 1999.
We Are...The League was created in 1982.
A-League was created in 2004.
I-League was created in 2007.
A-League National Youth League was created in 2008.
The standard distance between bases in Little League baseball is 60 feet.
The standard distance between bases in Major League Baseball is 90 feet.
Carolina League was created in 1945.
Pennine League was created in 1974.
Communist League was created in 1847.
BeNe League was created in 2012.
Challengers League was created in 2007.
The Central League was created in 1911.