Caddel was given the name "Ee-Dub" after his father's initials E.W., as was the custom in those days. He enrolled at
Stanford University in 1929 on a baseball scholarship, having never played football. Stanford would not recognize the initials "E.W," and so Caddel became "Ernie." While attending Stanford, head football coach
Glenn "Pop" Warner noticed Caddel's athletic ability and persuaded him to play for the football team. He played at the halfback position for Stanford from 1930 to 1932. In November 1931, he drew national attention when he ran for three touchdowns, two on long runs, in a 32-6 victory over Dartmouth. As a senior in 1932, Caddel starred for Stanford in September and October. In October 1932, a United Press correspondent wrote: "Ernie Caddel, a rangy fleet-footed halfback, is regarded by many as an All-America candidate. In every appearance this season he has brought spectators from their seats by his spectacular wide, sweeping runs around the end -- invariably evading tacklers for 15 to 30 yards." Caddel suffered two broken ribs in a game against
Oregon State. To allow Caddel to play through the injury, Stanford's coach Warner created what has been described as the first
flak jacket worn by a running back. Another writer noted, "Pop made a paper pattern one day and the thing that night. It was an ingenious affair. ... It had steel ribs, but you hardly noticed the weight." Due to this injury, however, Caddel was unable to play baseball in the spring of his senior year, and he lost his Stanford scholarship. He was then recruited by the Portsmouth Spartans to play professional football in Ohio. ==Professional football==