Detroit Tigers Jersey Question

[stkmtimo]

I've been looking at some Tigers gamers from 2007 sourced directly from their Authentics department. My question is in regards to their tagging. There is the standard strip tagging on the jerseys but clubhouse manager Jim Schmakel has initialed the Majestic tagging "JS" and added a "G" to the extreme right of the tagging. Does this have some specific meaning? Any help would be appreciated! Attached is a picture.

Thanks,

Tim