LAKELAND, FL (WKZO) -- Detroit Tigers first baseman Prince Fielder is the featured athlete on what the Topps trading card company is touting as the world's largest baseball card.  It was unveiled Tuesday at the Tigers' Spring Training home in Lakeland, Florida, measuring 90 feet long by 60 feet wide.  One hundred kids and Fielder helped to take part in the event to kick off the season and promote the release of the first series of Topps baseball cards for the year.