[drcy]

MLB hologramed items listed as team issued CAN be game worn, but you need other evidence such as usage and/or photomatch to confirm.

The MLB folks at the game note down only what they see with their own eyes. If they see the player remove the jersey after leaving the game, it will be noted as game worn. If the jersey was game worn but comes to the MLB authenticator in a pile of laundry in the lockerroom after the game, it will be noted in the records as team issued. The MLB authenticators are like notary publics. A notary public may have no question you signed that document but, per their job requirements, will only notary stamp the signature when they watched as you signed on the dotted line. There have been numerous items listed in the MLB records as team issued that have been confirmed as game worn through wear and photomatching. Realize that game worn and team issued aren't mutually exclusive words, as a game worn jersey was also team issued. It's just that not all team issued jerseys were worn in a game.

This very topic has been discussed often on the game used universe board.

I assume game used and game worn mean the same thing. Though you don't wear a baseball bat. There are cases where a player sat on the bench and the uniform is referred to as game worn (or game used)-- but that's a different issue than worn versus used usage. For game dated jerseys, collectors often check the box scores to confirm the player played.