Ever since the Earl of England named Edward coined the word "derby" more than 200 years ago, the word originating from horse racing has been associated with rivalry, passion, speed and competition, and when invoked on the green field, it has become synonymous with the "Battle of the Cities! When invoked on the green field, it became synonymous with the "battle of the cities".
Here in L.A. is
Los Angeles, California
Short for, Los Angeles has two NBA teams, the Los Angeles Lakers and the Los Angeles Clippers.
The L.A. Derby is when these two teams meet in an NBA game!
In the NBA league, the Clippers-Lakers game known as the L.A. Derby belongs to the first case because the Los Angeles Clippers and the Los Angeles Lakers share the same city of Los Angeles, California.
