Zack Hample, 21, has baseball radar! Since age 12, Zack has zeroed in on 1,285 baseballs from 18 different major league stadiums. "It's the thrill of the hunt," says Zack. "It makes me feel like the 10th fielder." Zack shares his ball-seeking strategies in a new book, How to Snag Major League Baseballs. The best time to catch 'em: batting practice.