ARLINGTON -- Rangers reliever Mike Adams and his wife, Shelly, will host a Mystery Ball fundraiser at Rangers Ballpark in Arlington on Tuesday. The event will benefit Operation Smile, a non-profit organization that provides free facial reconstruction for children born with facial deformities. Over 350 mystery balls will be sold for $50 a chance from the time gates open through 8 p.m. CT. Each will contain a baseball autographed by a Rangers player as well as other celebrities. The sale will continue on Wednesday if there are any mystery balls remaining. Operation Smile, headquartered in Norfolk, Va., is an international children's medical charity with a presence in more than 60 countries whose network of more than 5,000 medical volunteers from over 80 countries is dedicated to helping improve the health and lives of children. Since its founding in 1982, Operation Smile has provided more than 2 million healthcare evaluations and conducted more than 200,000 free surgeries for children and young adults born with cleft lips, cleft palates and other facial deformities, as well as patients suffering from burns.