 Dvorak was a member of four consecutive Western Conference championship track teams from 1901 to 1904 and was the conference pole vault champion in both 1901 and 1903.He won the 1903 conference championship with a vault of 11 feet, 9 inches, breaking the intercollegiate record of 11 feet, 6-1/2 inches held by Chapman of Drake.In May 1903, Dvorak set a world's record in the pole vault with a jump of 11 feet, 11 inches.