As the Cleveland Indians’ designated hitter, slugger extraordinaire Travis Hafner has averaged hitting 24 home runs per season for the past five years. Nicknamed “Pronk,” Hafner knows all about the science of launching fastballs over outfield fences in stadiums across North America. Pay tribute to Pronk’s power stroke by ordering this autographed baseball. His signature is guaranteed authentic by virtue of Upper Deck Authenticated’s patented five-step authentication process.