The Red Sox hired Babe to play in the major leagues with them. His first year with the Red Sox, they made the world series, and they had been the world champions in 1912. In 1916 the Red Sox made it to the world series again. Babe had pitched a 29.66 scoreless innings that game, it was a new world record, and it was not beaten for 42 years. On May 20, he hit his first Grand Slam in his pro carrier.