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

Josh Ockimey

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.

Josh signed a 2018 Topps Pro Debut card #3.

https://www.baseball-reference.com/register/player.fcgi?id=ockime000jos

Tanner Houck

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.

Tanner signed a 2018 Topps Heritage Minor League card #19.

https://www.baseball-reference.com/players/h/houckta01.shtml

Dick Drago

I met him at the Tampa Bay Rays Fan Fest at Tropicana Field in St. Petersburg, Florida on February 8, 2020.

Dick signed a 1979 Topps card #12.

https://www.baseball-reference.com/players/d/dragodi01.shtml

Ivan Ochoa

I met him at a Minor League game at Spectrum Field in Clearwater, Florida in 2019, when the Charlotte Stone Crabs, whom he was a coach for, came to play the Clearwater Threshers.

Ivan signed a 2009 Pawtucket Red Sox Team Set card #24.

https://www.baseball-reference.com/players/o/ochoaiv01.shtml

Roger Clemens

I met him at a Minor League Dunedin Blue Jays game at Jack Russell Stadium in Clearwater, Florida in 2019.

He was there watching his son, Kacy whom I met a year earlier. The day before meeting Roger, I met one of his other sons, Kody.

Roger signed the cover of the July 1991 issue of Beckett Baseball Card Monthly.

https://www.baseball-reference.com/players/c/clemero02.shtml

Tyler Hill

I met him at a Minor League game at Spectrum Field in Clearwater, Florida in 2019, when the Tampa Tarpons came to play the Clearwater Threshers.

Tyler signed a 2018 Salem Red Sox Team Set card #09.

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

Joel Hanrahan

I met him at a Minor League spring training game at Paul Owens Training Facility at Carpenter Complex in Clearwater, Florida in 2019, when the Pittsburgh Pirates, whom he was a pitching coach for, came to play the Philadelphia Phillies.

Joel signed a 2014 Topps card #194.

https://www.baseball-reference.com/players/h/hanrajo01.shtml

Jalen Beeks

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

Jalen signed a 2018 International League Top Prospects card #05.

https://www.baseball-reference.com/players/b/beeksja02.shtml

Luis Rivera

I met him at Spectrum Field in Clearwater, Florida in 2019, when the Toronto Blue Jays, whom he was the third base coach for, came to play the Philadelphia Phillies in a spring training game.

Luis signed a 1991 Upper Deck card #182.

https://www.baseball-reference.com/players/r/riverlu01.shtml

Wily Mo Pena

I met him at the Tampa Bay Rays Fan Fest at Tropicana Field in St. Petersburg, Florida on February 9, 2019.

Wily signed a 2006 Topps Allen & Ginter's card #32.

https://www.baseball-reference.com/players/p/penawi01.shtml

Will Middlebrooks

I met him at Paul Owens Training Facility at Carpenter Complex, the Philadelphia Phillies spring training facility in Clearwater, Florida in 2018.

Will signed a 2015 Topps Heritage card #289.

https://www.baseball-reference.com/players/m/middlwi01.shtml