Brad Penny

I met him at the 18U National Team Trials series at Buck O'Neil Baseball Complex in Sarasota, Florida in 2021.

Brad signed a 1999 Team Best card #79.

https://www.baseball-reference.com/players/p/pennybr01.shtml

Patrick Kivlehan

I met him at Spectrum Field in Clearwater, Florida in 2019, when the Pittsburgh Pirates came to play the Philadelphia Phillies in a spring training game.

Patrick signed a 2014 Topps Pro Debut card #117.

https://www.baseball-reference.com/players/k/kivlepa01.shtml

Rafael Chaves

I met him at Paul Owens Training Facility at Carpenter Complex, the Philadelphia Phillies spring training facility in Clearwater, Florida in 2015.

Rafael signed a 1993 Classic Best Gold card #56.

http://www.baseball-reference.com/minors/player.cgi?id=chaves001raf