John Mallee

I met him at Paul Owens Training Facility at Carpenter Complex, the Philadelphia Phillies spring training facility in Clearwater, Florida in 2019.

John signed a 2000 Huntsville Stars Team Set card.

https://www.baseball-reference.com/register/player.fcgi?id=mallee001joh

Tanyon Sturtze

I met him at the New York Yankees fantasy camp at George M. Steinbrenner Field in Tampa, Florida in 2016.

Tanyon signed a 1993 Classic Best card #260.

http://www.baseball-reference.com/players/s/sturtta01.shtml

DeMarlo Hale

I met him at a Minor League game at Jack Russell Memorial Stadium in Clearwater, Florida in 1996, when the Sarasota Red Sox, whom he was managing, came to play the Clearwater Phillies.

DeMarlo signed a 1988 Huntsville Stars Team Set card.

http://www.baseball-reference.com/minors/player.cgi?id=hale--001dem

Lee Tinsley

I met him at Carpenter Complex, the Philadelphia Phillies spring training facility in Clearwater, Florida in 1996.

Lee signed a 1991 Classic Best card #207.

http://www.baseball-reference.com/players/t/tinslle01.shtml