 While on a full athletic (gridiron) scholarship, Clemens suffered a severe knee injury, early on in Fall, 1957; however, the Orangemen transferred his scholarship to the diamond, where he played first base, lettering in baseball in both and .Following his Junior year, Clemens turned pro, signing with the Cardinals.A pinch-hitting specialist for most of his MLB career, Clemens’ main claim to fame stems from the June 15, 1964, trade that brought future Hall of Famer Lou Brock to the Cardinals.