Carrie UnderwoodCountry music's heavy hitters are getting set to take the field at next week's City of Hope 20th Annual Celebrity Softball Challenge. The rival teams, Grand Ole Opry and 'After MidNite With Blair Garner,' will face off on June 7, beginning at 7:00 PM CT at Nashville's Greer Stadium. Tickets are $20 each and are available at Ticketmaster. Among the players are a couple of former lovebirds (who have both done some 'Dancing With the Stars') and the four members of a popular group who are splitting in half (temporarily) to play on opposing sides!

In the 20 years since the Celebrity Softball Challenge began in Nashville, the star-studded event has raised over $2 million for City of Hope, a leading research, education and treatment center for cancer and other life-threatening diseases.

Playing for the 'After MidNite' team are Vince Gill, Keith Anderson, Chuck Wicks, David Nail, Joe Nichols, Josh Thompson, Luke Bryan, comedienne Melissa Peterman, CMT's Katie Cook (emcee), Mike Gossin and Rachel Reinart of Gloriana, Randy Montana, Savannah Jack, Oak Ridge Boys, Whitney Duncan, JP Dumont of the Nashville Predators, pro baseball player Ben Broussard and Ken Amato and Donnie Nickey of the Tennessee Titans.

The Grand Ole Opry team includes Carrie Underwood, Julianne Hough, Cheyenne Kimball and Tom Gossin of Gloriana, Craig Morgan, Colt Ford, Jaron and the Long Road to Love, Jason Aldean, Justin Moore, Mallary Hope, GAC 'Headline Country' host Storme Warren (emcee), The Band Perry, Trailer Choir, Two Foot Fred and rock musician Felix Cavaliere, plus Wade Belak of the Nashville Predators, and Titans Courtland Finnegan and Justin Gage.

Fans who can't attend the game can still support City of Hope by visiting to bid immediately following the event on several one-of-a kind collectibles signed by country's hottest stars, sports celebrities and more. For those who have been dedicated to recent flood relief efforts in Nashville, City of Hope is donating 200 game-day tickets to the American Red Cross.