INTRODUCTION   Back   Bowling, indoor game in which players roll balls along a runway called a lane or alley, attempting to knock down ten pins. Sometimes called tenpins, bowling is one of the most popular sports in the world. The sport's governing body, the Fédération Internationale des Quilleurs (International Bowling Federation), lists more than 110 countries as members and estimates that more than 100 million people bowl annually. The United States alone is home to more than 5,000 local bowling associations that sponsor tournaments for more than 4 million bowlers.