Marcelo Mayer

I met him at BayCare Ballpark in Clearwater, Florida, in 2025 when the Boston Red Sox came to play the Philadelphia Phillies in a spring training game. 

Marcelo signed a 2022 Topps Heritage Minor League card #202.

https://www.baseball-reference.com/players/m/mayerma01.shtml

Roman Anthony

I met him at BayCare Ballpark in Clearwater, Florida, in 2025 when the Boston Red Sox came to play the Philadelphia Phillies in a spring training game. 

Roman signed a 2024 Bowman Prospects card #BP-22.

https://www.baseball-reference.com/players/a/anthoro01.shtml

Eduardo Lopez

I met him at Paul Owens Training Facility at Carpenter Complex, the Philadelphia Phillies spring training facility in Clearwater, Florida in 2025.

Eduardo signed a 2022 Bowman Prospects card #BP-134.

https://www.baseball-reference.com/register/player.fcgi?id=lopez-005edu

Blaze Jordan

I met him at BayCare Ballpark in Clearwater, Florida, in 2025 when the Boston Red Sox came to play the Philadelphia Phillies in a spring training game. 

Blaze signed a 2023 Bowman Prospects card #BP-101.

https://www.baseball-reference.com/players/j/jordabl01.shtml

Tony Armas

I met him at an autograph signing at the Tampa Sports Collectors Expo at the Florida State Fairgrounds Special Events Center in Tampa, Florida, in 2024.

Tony signed a 1987 Topps card #535.

https://www.baseball-reference.com/players/a/armasto01.shtml

Eddinson Paulino

I met him at a Minor League game at TD Ballpark in Dunedin, Florida in 2024, while he was on a rehab assignment with the Dunedin Blue Jays.

Eddinson signed a 2023 Topps Pro Debut card #PD-155.

https://www.baseball-reference.com/register/player.fcgi?id=paulin000edd

Taylor Jackson

I met her at a Minor League game at LECOM Park in Bradenton, Florida in 2024, when the Daytona Tortugas, whom she was a development coach for, came to play the Bradenton Marauders.

Taylor signed a 2023 Greenville Drive Team Set card #35.

Justin Turner

I met him at Tropicana Field in St. Petersburg, Florida in 2024, when the Toronto Blue Jays came to play the Tampa Bay Rays.

Justin signed a 2023 Topps Archives card #197.

https://www.baseball-reference.com/players/t/turneju01.shtml

Bobby Dalbec

I met him at BayCare Ballpark in Clearwater, Florida in 2024, when the Boston Red Sox came to play the Philadelphia Phillies in a spring training game.

Bobby signed a 2023 Topps Heritage card #99.

https://www.baseball-reference.com/players/d/dalbebo01.shtml

Trevor Story

I met him at BayCare Ballpark in Clearwater, Florida in 2024, when the Boston Red Sox came to play the Philadelphia Phillies in a spring training game.

Trevor signed a 2022 Topps Heritage card #507.

https://www.baseball-reference.com/players/s/storytr01.shtml

Triston Casas

I met him at BayCare Ballpark in Clearwater, Florida in 2024, when the Boston Red Sox came to play the Philadelphia Phillies in a spring training game.

Triston signed a 2023 Topps Stadium Club card #250.

https://www.baseball-reference.com/players/c/casastr01.shtml

Bill Mueller

I met him at BayCare Ballpark in Clearwater, Florida in 2024, when the Miami Marlins, whom he was the assistant hitting coach for, came to play the Philadelphia Phillies in a spring training game.

Bill signed a 2005 Topps card #179.

https://www.baseball-reference.com/players/m/muellbi02.shtml

Michael Kopech

I met him at Tropicana Field in St. Petersburg, Florida in 2021, when the Chicago White Sox came to play the Tampa Bay Rays.

Michael signed a 2015 Topps Heritage Minor League card #173.

https://www.baseball-reference.com/players/k/kopecmi01.shtml

Scott Sommers

In February of 2021, I was looking for cards to mail out and I saw on the back of Scott Sommers' card that his birthday was less than a week away (February 27th), so I decided to look him up and I found his address and sent him my card and the following letter.

30 days later my card came back signed and he included a note back.

Scott signed a 1989 Star card #130.

https://www.baseball-reference.com/register/player.fcgi?id=sommer001sco

Robb Welch

In February of 2021, I decided to seek out an address for Robb Welch. I discovered that he was a civil engineer for a company in Michigan, so I sent him my card and the following letter.

Eight days later my card came back signed and he included some words of encouragement.

Robb signed a 1994 Signature Rookies Draft Picks card #75.

https://www.baseball-reference.com/register/player.fcgi?id=welch-004rob

Billy Jo Robidoux

My birthday is on January 13th, so I came up with another TTM challenge for myself. This one I called "The TTM Birthday Challenge." On January 6, 2021, one week before my birthday, I sent birthday cards to ten baseball players who also share my birthday.

Here is the birthday card that I sent to Billy Jo Robidoux.

23 days later, my card came back signed.

Billy Jo signed a 1990 Upper Deck card #782.

https://www.baseball-reference.com/players/r/robidbi01.shtml

Bryan Brown

On October 26, 2020, I came up with another TTM challenge for myself. This one I called "The Color Wheel Challenge." I sent cards to five random baseball players with colorful last names.

I found Bryan Brown's address on my own and sent him my card and a letter.

Fourteen days later my card came back signed.

Bryan signed a 1992 Classic Best Winter Haven Red Sox Team Set card #18.

https://www.baseball-reference.com/register/player.fcgi?id=brown-001bry

Dana Kiecker

In August of 2020, an autograph collector on Instagram posted a letter from Dana Kiecker about a scholarship fund that Mr. Kiecker and his wife had created. For a $1 donation, Dana would sign a card. I thought that sounded fair, so I wrote him a letter and sent my card along with a dollar bill.

Ten days later my card came back signed.

Dana signed a 1991 Upper Deck card #507.

https://www.baseball-reference.com/players/k/kieckda01.shtml

Mike McCarthy

I met him at Spectrum Field in Clearwater, Florida in 2020, when the Minnesota Twins, whom he was the AAA pitching coach for, came to play the Philadelphia Phillies in a spring training game.

Mike signed a 2014 Portland Sea Dogs Team Set card.

https://www.baseball-reference.com/register/player.fcgi?id=mccart003mic

Brett Netzer

I met him at Spectrum Field in Clearwater, Florida in 2020, when the Boston Red Sox came to play the Philadelphia Phillies in a spring training game.

Brett signed a 2017 Bowman Draft card #BD-31.

https://www.baseball-reference.com/register/player.fcgi?id=netzer000bre