Daddio was an All-State performer at Meadville High School in Meadville, Pennsylvania. After a successful high school career, he moved to the University of Pittsburgh to play under coach Jock Sutherland. Daddio led the Panthers in receiving during the 1936 season. In each of his final two seasons at Pitt, 1937 and 1938, he was recognized as an All-American. During the 1937 Rose Bowl against the Washington Huskies, Daddio contributed significantly in the run game and returned an interception 71 yards in the fourth quarter to secure a victory for the Panthers. In 1953, Daddio retroactively received the Rose Bowl Player of the Game Award for the 1937 contest in Pasadena. In 1992, Daddio was inducted into the Rose Bowl Hall of Fame.
Daddio was the head football coach at Allegheny College in Meadville, Pennsylvania. He held that position for five seasons, from 1947 until 1951. His coaching record at Allegheny was 14–18–5.[2] Following his stint at Allegheny, Daddio took a position under Stu Holcomb at Purdue University and continued there under Jack Mollenkopf until 1958. In 1969, Daddio became a scout with the Denver Broncos.
Death
Daddio died of a heart attack at the age of 73 on July 5, 1989, at St. Clair Memorial Hospital in Mt. Lebanon, Pennsylvania.[3]