William Francis Carrigan (October 22, 1883 – July 8, 1969), nicknamed "Rough", was a Major League baseball catcher and manager. He played for the Boston Red Sox between 1906 and 1916, and he was a player-manager for the last four of those seasons. In 1915 and 1916, Carrigan's teams won back-to-back World Series. He was said to exert a positive influence on young Red Sox star Babe Ruth, serving as his roommate and his manager. He has the highest postseason winning percentage (.800) of any manager with multiple postseason appearances, and was named to the Honor Rolls of Baseball in 1946. After his playing career, Carrigan was a partner in a large chain of New England vaudeville and movie theaters. He returned to the Red Sox as a manager between 1927 and 1929; the team finished in last place in each of those seasons. He then returned to his native Lewiston, where he was named a bank president in 1953 and where he died in 1969. Early life Carrigan was born in Lewiston, Maine. Carrigan's brother John was a talented pitcher, and Carrigan served as his catcher. Carrigan played football and baseball at Lewiston High School; he also played roller polo, but it caused him to get into fights, and his brother pleaded with him to stop playing. He studied at College of the Holy Cross in Worcester, Massachusetts. At the time, Holy Cross was known for sending its baseball players to the major leagues. Early baseball career Carrigan started his career as a platoon catcher and played all ten seasons with the Boston Red Sox. Biographer Richard A. Johnson noted that Carrigan was known in baseball for combining toughness with intelligence. For a portion of his time in Boston, Carrigan's roommate was Babe Ruth. "Carrigan served Ruth as a combination father confessor, drill sergeant, psychologist and Dutch uncle," wrote Johnson. Ruth called Carrigan the best manager he ever played for. Carrigan also had a close relationship with Detroit Tigers star Ty Cobb. Both Carrigan and Cobb were known for their intense play on the field, but they were friends and Cobb often came to Maine to visit Carrigan. A schism was forming along religious lines among Red Sox players and coaches in the early 1910s. Players like Tris Speaker held anti-Catholic sentiments, and they supported their manager, Stahl. Carrigan was among a group of Catholics on the team who