I saw these a long time ago on ebay, they were really fun to collect, haven't purchased any in a while but they were all serial numbered and signed by the artist edward vela, a guy that has his own site and sells his stuff, if you search artbyvela in a search I am sure you come across it. Being a sports nut is a bonus but not a must to get these pictures/collector cards of people, they range from star wars, bruce lee, actors/actresses, singers, artists, you name it there is probably an artists' rendering of it. Very cool collection I recommend checking them out, my user picture of babe ruth is a pic rendered from ruth that is a famous picture during his playing days with the yankees.
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From @baberuth