Why are three goals called a hat trick? Why is "Take Me Out to the Ballgame" sung during the seventh-inning stretch? Why do golf balls have dimples? Divided into four levels of difficulty — Professional, All-Star, MVP, and Hall of Fame — answers to more than five hundred questions are provided not only with an in-depth explanation of the science, history, or origin of the particular subject matter, but with photos and illustrations that help make the information easy to digest. A must-have book for any curious young sports fan! A four-part interactive quiz at the back of the book invites readers to find the biggest adult sports fans they know and attempt to stump them with the fascinating insider knowledge the book provides.