Book excerpt: The must-have guide to the Summer Olympic Games This summer, millions of Americans will tune into the Olympic Games, the largest and most popular sporting event in the world. Yet while it's easy to be fascinated by agile gymnasts, poised equestrians, and perfectly synchronized swimmers, few of us know the real width of a balance beam, the intricate regulations of dressage, or the origin of those crowd-pleasing legs-in-the-air swimming formations. Luckily, David Goldblatt and Johnny Acton have created this utterly thorough and always fun guide to the rules, strategy, and history of each sport. Originally timed to 2012 London Games, their book is every bit as useful for Rio de Janeiro in 2016. With witty, detailed descriptions and clever illustrations, How to Watch the Olympics will help anyone grasp handball, archery, wrestling, fencing, and every other Olympic event like a true pro.