Members of the Rolando Little League in La Mesa say their field has been the site of some disturbing discoveries.
Drugs and other drug paraphernalia have been found on the grounds and taggers have repeatedly spray painted on the snack bar, the fences and even all over the parking lot.
The president of the league tells 10News, this is the third time the graffiti has been found in just two weeks.
La Mesa city crews have been helping to clean up the mess and police have said they will step up patrols in the area.
The league is hoping to raise money to install more lighting and security cameras.
They've set up a Go Fund Me account at http://www.gofundme.com/rolandolittleleague .