The 1912 WS was the high point of Yerkes’s career. He drove in the winning run for the Red Sox in Game One with a two-run seventh-inning single, and he scored the Series-winning run in the tenth inning of Game Eight (Game Two had been a 6-6 tie). In that final game, Yerkes drew a walk-off Giants ace Christy Mathewson two batters after outfielder Fred Snodgrass‘s famous error and later scored on Larry Gardner‘s sacrifice fly. That season, his first as Boston’s regular second baseman (he’d been their shortstop in 1911), he hit .252 with a career-high 73 runs. After three solid seasons with Boston, he jumped to the Federal League in mid-1914 (while earning $3,500 a year with the Red Sox) to make $6,500. He hit a career-high .288 for the 1915 Pittsburgh Rebels. He later managed in the minors and coached Yale’s freshman team.