https://knuckleball.app/players/tim-tebow

Multi Card Stop 2 of 4! Asked him to sign the Reds logo but he signed the Cubs logo.

https://knuckleball.app/returns/1614

Al Jardine signed postcard!

https://knuckleball.app/returns/1593

Danny Trejo! Did not expect this one to work when I saw that you could request via email as I thought for sure he would be inundated with requests. I was extremely surprised to receive this a few months later with the specific request of the Star Wars Book of Boba Fett Poster!

I’ve recently seen that he’s is no longer accepting email requests, and I’ve updated my site to reflect that information. When you write to him be sure to send him a self addressed 9 x 12 stamped envelope with your request.

Knuckleball.app is completely free and a great tool for keeping track of who you send to, returns and failures as well as behaviors with a tagging system. We’re different than SCF and Startiger.

We’re currently invite only as we build our database and resources. Click the link to use this invite registration code:

https://knuckleball.app/register?invite_code=MAILDAY

Boomer Esiason! There is something about a card you’ve had since you were a kid getting signed. Bengals are my hometown team even though I no longer live in Cincy. There are two addresses floating around and this one took quite a long time, but I went with his official foundation’s address and confirmed it directly with them before including it on my site (both will work however). I’ve included the address and fee info below.

That experience is exactly why I built knuckleball.app. It’s newer, more user friendly, and won’t inundate you with ads or make you time travel back to web surfing in 2007. It also has features like tags that help collectors understand player signing habits over time.

If you want to help build our early community, you can use an invite code to join. It’s 100% free:

https://knuckleball.app/register?invite_code=TOUCHDOWN