Hooper's batting average dropped to .242 in 1912. Boston won the 1912 World Series, during which Hooper made a catch that "The Pittsburgh Press" referred to as one of the finest plays in baseball history. The paper noted that Hooper "does not seek the limelight. He is reserved and bashful, and every action of his upon the baseball field plainly shows these qualities." On May 30, 1913, Hooper became the first player to hit a home run to lead off both games of a doubleheader, a mark only matched by Rickey Henderson, Brady Anderson, and Ronald Acuna, Jr. over 80 years later. In 1914, he recorded 230 putouts in right field, which was the first of several seasons in which he finished in the top three in that category among right fielders.