Preston Burpo

I met him at the Joe DiMaggio Sports Complex in Clearwater, Florida in 2019, when the New York Red Bulls, whom he was the goalkeeper coach for, came to play the Philadelphia Union in a scrimmage.

Preston signed a 2009 Upper Deck Major League Soccer card #159.

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

Siniša Ubiparipović

I met him at Al Lang Stadium in St. Petersburg, Florida, when Indy Eleven came to play the Tampa Bay Rowdies on opening day of the 2016 North American Soccer League season.

Siniša signed a 2009 Upper Deck Major League Soccer card #180.

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

Jim Curtin

I met him at the Joe DiMaggio Sports Complex, the Philadelphia Union's spring training home in Clearwater, Florida in 2016.

Jim signed a 2009 Upper Deck Major League Soccer card #99.

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