The fan who says he caught the baseball that Ken Griffey Jr. hit for his milestone 600th home run plans to sell it at auction.

Joe Scherer says he decided to put the ball in the Aug. 1 auction after consulting with other people, including family and friends.

Doug Allen, president of Mastro Auctions in suburban Chicago, said Thursday he expects the ball to attract substantial bidding interest. He says the Cincinnati Reds star has remained untainted by the steroid era.

He thinks the ball will sell for at least $50,000, and as much as $100,000.
There is still a potential obstacle to the ball's auction. Another fan filed a lawsuit claiming the ball was ripped away from him during the June 9 game in Florida.