You likely have a 1995 Signature Rookies Tetrad (see Multi-Sport listings) autograph that was obtained through their redemption program.
There were point cards inserted in packs which could be collected & sent in for different autographs - see the yellow side of the checklist card. The low level autograph lists (1 or 2 point) have a "Players like..." heading, which means there were many athletes not listed. The whistle logo says "You make the call", which refers to your choice in their point redemption offer.