Zach Stewart

I met him at a Minor League game at BayCare Ballpark in Clearwater, Florida in 2021, when the Dunedin Blue Jays, whom he was the development coach for, came to play the Clearwater Threshers.

Zach signed a 2014 Gwinnett Braves Team Set card #24.

https://www.baseball-reference.com/players/s/stewaza01.shtml

Barrett Kleinknecht

I met him at an extended spring training game at Paul Owens Training Facility at Carpenter Complex in Clearwater, Florida in 2017, when the Atlanta Braves, whom he was a manager for, came to play the Philadelphia Phillies.

Barrett signed a 2015 Gwinnett Braves Team Set card #20.

http://www.baseball-reference.com/register/player.fcgi?id=kleink001bar