Joliet Slammers

May 12-Sept. 4. At Duly Health and Care Field, 1 Mayor Art Schultz Drive. Tickets: $9-$16; $2 off if you purchase before game day. $2 Tuesdays in advance; $3 day of game. 815-722-2287; Jolietslammers.com.

A few of the themes this summer at Duly Health and Care Field include Canadian Night, “Almost” Halfway to Halloween, Blues Brothers Night, World’s Ocean Day, Freaky Friday, Hawaiian Night, American Girl Night, Christmas in July, Sitcom Night, Welcome to the Upside Down, and “Star Wars” Night.

Local rivals include the Windy City Thunderbolts and the Schaumburg Boomers.

Chicago Dogs / Rosemont

May 13-Sept. 5. At Impact Field,

9850 Balmoral Ave. Tickets: $9-$25. 847-636-5450; Thechicagodogs.com.

The Chicago Dogs will offer 14 fireworks shows, 11 giveaways, 11 theme nights and an all-star game. Theme Night Saturdays include salutes to Jimmy Buffett, Elvis, “Star Wars,” St. Patrick’s Day, Bark at the Ballpark, and more.

Schaumburg Boomers

May 20-Sept. 4. At Wintrust Field, 1999 S. Springinsguth Road. Tickets: $11-$14. 847-461-3695; Boomersbaseball.com.

The 2021 Frontier League Champions’ May 20 home opener features the championship ring pregame ceremony with a replica ring giveaway and postgame fireworks.

Theme nights include Harry Potter, “Stranger Things,” Looney Tunes, Marvel superhero, pro wrestling, “Star Wars,” Jimmy Buffet, and back to school.

Nearly 20 dates will include postgame fireworks shows and other promotions include All You Can Eat Wednesdays (for $12, fans can get all-you-can-eat hot dogs, peanuts and popcorn), Thirsty Thursdays and $1 hot dog nights.

On Aug. 5, stick around after the game for the World’s Biggest Marshmallow Fight presented by Campfire Marshmallows.