Professional fan†Hample (How to Snag Major League Baseballs
), who falls squarely in the “deeply serious geek†category, has put together an invaluable resource for armchair fans. A former college shortstop, four-time attendee of Bucky Dent's Baseball School and an obsessive baseball collector, Hample covers basics such as what to watch for in pitchers, catchers, hitters, fielders and base runners; he also provides answers to such nagging questions as why spectators stretch in the seventh inning and why most ballplayers grab their crotches. He explains the difference between a change-up and a split-finger fastball, breaks down a box score and offers an extensive glossary of baseball slang that defines both a “courtesy trot†and a “dying quail.†Other sections address free agency and fair balls, umpires and uniform numbers, stadiums and superstitions. Trivia abounds, including the names of the 10 switch hitters honored in the National Baseball Hall of Fame and a record of inside the park home runs. Hample hits the equivalent of a reference book home run with his witty and loose style—taking a friendly for-a-fan-by-a-fan approach that doesn't hide his enormous depth of knowledge. Hample also schools amateur players and coaches with well-illustrated examples of some complex pitching, hitting and base-running scenarios. (Apr.)