Ken Griffey Jr. Autograph Signing

We are excited to announce our next Ken Griffey Jr. signing! Mail-In orders are closing up very soon, so make sure to order soon if you'd like to get an item signed by Ken Griffey Jr.


This signing will take place in May 2022. The exact date has not been set, but we will announce it once we find out.


This signing is broken down into two different categories: Mail-In Items and Preorder Items.


Mail-In Items:

Customers may send their items to us to get signed by Ken Griffey Jr. We have created a Mail-In listing for this. In this listing, please choose which item you're sending in. You will be charged differently depending on what items you're sending in.


We have also included premium options for mail-in items. This includes game used items, milestone tickets, etc. You will have to pay the premium option charge if you are sending in these types of items to get signed. 

If you would like to add any notes to the order (pen color, autograph location, etc.), please include them in the notes section during checkout.


All Mail-In orders must be sent to our store. Please include your order # inside of the package to help us keep track of your order. Please send your mail-in items to:


Mill Creek Sports ATT: Mail Orders

13616 Bothell Everett HWY

Mill Creek, WA 98012


Preorder Items:

These are items that we are getting signed and will be selling in the future. You may preorder these items to ensure that you will receive them without the chance of them selling out.


Inscriptions + Beckett Authentication:

We have included an Inscription option and a Beckett Authentication option for both Mail-In Items and Preorder Items. You may choose one inscription from the pre-approved list for $100.


You can also choose to add Beckett Authentication to your item for $8. We will have Beckett authenticate your item by adding a tamper-proof sticker to it. We are not providing an encapsulation service for cards. This option is only available for items signed only by Ken Griffey Jr. Beckett will not be authenticating items that have multiple signatures.



We currently accept Paypal and Credit Cards on our website. If you do not have a Paypal account but would like to pay with a credit card, use our Paypal Guest option. This will be the second Paypal option. It will redirect you to Paypal's website, but it does not require you to have an account or create one.




  • We have the right to add a Premium pricing fee to any mail-in at its discretion. We will contact you to discuss the actual fee.
  • No Jersey Numbers
  • No Unlicensed Jerseys
  • No Yankee Killer Sports Illustrated Cover
  • Ken Griffey Jr. will not sign his full name (George Kenneth Griffey Jr.), middle name, or any deviation of it.
  • Ken Griffey Jr. has the right to refuse any item. We will offer refunds for items that he does not sign.