One of my buddy's has a wife who's an upper up in the PGA tour, and worked with Woods getting fitted. Each player gets their clothes custom fitted, so its likely the tag was written in by a PGA rep or a Nike Rep.
Over 3800 Marinos with 375+ memorabilia cards (115 of which are auto'd)
[B]Marino Most Wanted:
1) 13 UD Nationals Infinite