Carl "Sub" Mays grew up in the Prairie Hollow community south of Mansfield and made his major league debut as a pitcher on April 15, 1915. His famous spitball submarine delivery produced a heavy, sinking effect that batters easily misjudged. From 1916 to 1918, he set a Boston team record for assists by a pitcher with more than 117 per season. Mays was the first major league pitcher to achieve 20-win seasons in both the American League with the Red Sox and Yankees and the National League with the Reds. On August 30, 1918, he became the only Red Sox pitcher to throw two nine-inning complete game victories on the same day.