Carrie UnderwoodSeveral of country music's biggest stars are trading in their boots for cleats, all for a great cause.

On Monday June 7, the annual City of Hope Celebrity Softball Challenge will feature Carrie Underwood, Luke Bryan, Julianne Hough, Love & Theft, Craig Morgan, Chuck Wicks, Randy Houser, Two Foot Fred, the Oak Ridge Boys and Whitney Duncan, all hitting the ball field to raise funds for medical research and patient care. This year marks the 20th anniversary of the event, which takes place at Nashville's Greer Stadium.

The softball game kicks off a week of non-stop concerts and artist-fan interaction with the annual CMA Music Fest.

Click here for more information on the City of Hope Celebrity Softball Challenge.

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