William Ashley Sunday was an American athlete and religious figure who, after being a popular outfielder in baseball's National League during the 1880s, became the most celebrated and influential American evangelist during the first two decades of the 20th century. Born into poverty, Sunday spent some years in an orphanage before taking a series of odd jobs in several small Iowa towns as he demonstrated his prowess in amateur athletics. Converted to evangelical Christianity in the 1880s, Sunday left baseball for the Christian ministry. He gradually developed his skills as a pulpit evangelist in the Midwest and then, during the early 20th century, he became the nation's most famous evangelist with his colloquial sermons and frenetic delivery. Sunday held heavily reported campaigns in America's largest cities, made a great deal of money, and was welcomed into the homes of the wealthy and influential. He may have personally preached the gospel of Jesus Christ to more people than any other person in history up to that time. Sunday almost certainly played a significant role in the adoption of the Eighteenth Amendment in 1919.