Contest Results

So my question was: What do the following cards have in common?

The answer that I was looking for was that they are all Rookie Cards of players who won the Rookie of the Year award.

Only 3 people responded and even though none of them got the exact answer that I was looking for, I am going to send them each a consolation prize just for playing. So David, Captain Canuck and skoormit can all expect a package from me soon.