Austin da Luz

I met him at Al Lang Stadium in St. Petersburg, Florida in 2018, when North Carolina FC came to play the Tampa Bay Rowdies.

Austin signed a 2010 Upper Deck World of Sports card #87.

https://en.wikipedia.org/wiki/Austin_da_Luz

Bret Wagner

I met him at a Minor League game at Jack Russell Memorial Stadium in Clearwater, Florida in 1995, when the St. Petersburg Cardinals came to play the Clearwater Phillies.

I remember this day for a couple of reasons. First, it was a day/night doubleheader. A noon game between the St. Petersburg Cardinals and the Clearwater Phillies followed by a spring training game between the Cincinnati Reds and the Philadelphia Phillies.
Second, it was April 19, 1995, the day of the Oklahoma City bombing.

Bret signed a 1994 Signature Rookies Draft Picks card #19.

http://www.baseball-reference.com/minors/player.cgi?id=wagner001bre

Mike Buddie

I met him at a Minor League game at Jack Russell Memorial Stadium in Clearwater, Florida in 1994, when the Tampa Yankees came to play the Clearwater Phillies.

Mike signed a 1992 Classic Draft Picks card #77.

http://www.baseball-reference.com/players/b/buddimi01.shtml