The Los Angeles Angels are in Philadelphia to play the Phillies this week, bringing Mike Trout close to home.
Trout grew up in Millville, New Jersey, which is about 45 miles from Citizens Bank Park.
As many as 8,000 people from the Millville area will travel to Philadelphia or an event officially called "Millville Night."
"It's probably the biggest event this city has ever had," deputy mayor Jim Quinn said. "Back in the '50s, Millville's [high school] football team had a 31-game winning streak that was a big thing, but I can't think of anything close to what is happening with Mike Trout at Citizens Bank Park."
Trout -- in a 6-for-43 slump that has his batting average down to .272 -- graduated from Millville High in 2009.
"It's going to be pretty cool to see everybody, but it's overwhelming sometimes because you want to please everybody and you really can't," Trout said.