Jones quarterbacked Yale to 6–0 and 12–0 victories versus Harvard as a junior and senior, respectively, in 1906 and 1907. Yale finished with 9–0–1 records both years, and he was named an All-American both seasons. As head coach, Jones led Yale football to a 5–3–1 record versus Harvard, and gave the most revered pregame pep talk in Yale athletic history before the Harvard–Yale game in 1923. Before that contest Jones intoned famously, "Gentlemen, you are about to play football against Harvard. Never again may you do something so important." Yale won 13-0, with Babe Ruth providing broadcast commentary. Ducky Pond returned a Harvard fumble sixty-three yards for a touchdown. Bill Mallory kicked the extra point and two field goals. The Yale team was 8-0 for the season.