This 1024-card set was issued over two series. In addition, a 20-card Rookie Exchange set was also produced and numbered sequentially at the beginning of the second series. The first series was released in March, 2007 and the second series was released in June, 2007. The cards were released in both hobby and retail packs. The hobby packs contained 15 cards per pack which came 16 packs to a box and 12 boxes to a case. Cards numbered 1-50 and 501-520 are rookie subsets while cards numbered 471-500 are checklist cards. There was a Rookie Exchange card for cards 501-520 which was redeemable until February 27, 2010. The rest of the set is sequenced alphabetically by what team the player featured was playing for when the individual series went to press.