Born in Ireland in 1864 and raised in Massachusetts, Joseph Quirk ran away at sixteen to join the circus. There, while working with performers, horses, and athletes, he learned the secrets of strength, endurance, and recovery--skills that would eventually carry him into the heart of America's national pastime.

At a time when baseball teams barely understood the concept of sports medicine, Quirk arrived in the major leagues with a worn medical bag, sharp instincts, and a remarkable ability to restore injured players to the field. His methods and inventions rocked clubhouses, and sportswriters soon began calling him "Prof. Quirk," and later "Dr. Quirk"--not because of a diploma but because of the results.

Over the years, Joe Quirk worked for an impressive lineup of major league clubs, including the Washington Nationals, the St. Louis Browns, and the Brooklyn Dodgers. The highlight of his career was serving as the trainer for the Boston Red Sox during the storied 1912 season, when the team opened the brand-new Fenway Park and went on to capture the World Series. Ace pitcher Smoky Joe Wood dominated the league with thirty-five complete games, a 1.91 earned run average, and a sixteen-game winning streak--an American League record he still shares today. Alligator Joe was there, treating and training Smoky Joe just as he had done with some of the game's greatest stars--among them future Hall of Famers Walter Johnson, Rube Waddell, Tris Speaker, and Harry Hooper.

Illustrated with archival images and based on extensive research drawn from contemporary newspaper articles, historical records, and various other sources, this engaging biography introduces sports fans to the heretofore overlooked figure who played a key role in baseball history and helped to establish the field of athletic training.