Carrigan was a dependable platoon catcher who took over a dissension-torn defending World Champion Red Sox team in 1913 as playing manager. He could not set things right until 1914, when he brought the team home second. In 1915 and 1916, with Babe Ruth added to his pitching rotation, Carrigan led Boston to two World Championships.
Carrigan quit at the peak of his success to become a banker in his native Maine. He made a surprise return as Red Sox manager in 1927, but the results were disastrous. The team finished last three straight seasons. While there was an absence of talent, it was also evident that the conservative Carrigan was out of his element in the free-swinging, lively-ball era.