Nick DeLeon

I met him at the third annual Rowdies Suncoast Invitational at Al Lang Stadium in St. Petersburg, Florida in 2018, when D.C. United played the Philadelphia Union in a pre-season game.

Nick signed a 2012 Upper Deck Major League Soccer card #187.

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

Austin Berry

I met him at Al Lang Stadium in St. Petersburg, Florida in 2017, when FC Cincinnati came to play the Tampa Bay Rowdies.

Austin signed a 2012 Upper Deck Major League Soccer card #189.

https://en.wikipedia.org/wiki/Austin_Berry_(soccer)

Browning Nagle

I met him at a celebrity golf tournament at Lansbrook Golf Course in Palm Harbor, Florida in 1993.

Browning signed a 1991 Upper Deck football card #11.
A year or 2 later. Browning was back again for another golf tournament. This time I was able to have him sign the back of the October 1992 issue of Beckett Football Card Monthly.

http://www.pro-football-reference.com/players/N/NaglBr00.htm