Topps and Upper Deck are the only two companies that retained production licenses for baseball cards of major league players. In a move to expand their market influence, Upper Deck purchased the Fleer brand and the remnants of its production inventory. After purchasing Fleer, Upper Deck took over production of the remaining products that were slated to be released. Upper Deck continues to issue products with the Fleer name, while Topps continues to release Bowman and Bazooka card products. Topps is also the only company that continues to produce pre-collated factory sets of cards.