In "Slugger", Lilo can be seen playing Little League softball with Stitch, a few of Stitch's cousins, Jumba, and Pleakley against Mertle and the hula girls. The ball field is later shown to be Experiment 608's (Slugger's) one true place because he becomes the hitter for the Little League softball team and their coach's assistant, who wasn't a very good hitter himself.
This baseball field appears again in "Glitch", where the team's Little League coach uses a baseball pitching machine for Slugger to practice his batting skills. However, the pitching machine suddenly malfunctions and goes out of control. Regardless, Slugger manages to hit every ball the machine throws at him, along with Experiment 223's (Glitch's) pod.
In Leroy & Stitch, Slugger can be seen playing baseball at the ball field as Lilo was making her rounds with Scrump to make sure all the experiments were happy in the one true place they belonged. Later, Leroy showed up and kidnapped Slugger.