Education
Kowalczyk attended Westfield High School, where he earned four letters in football and baseball, three in basketball and two in track.
Kowalczyk attended Westfield High School, where he earned four letters in football and baseball, three in basketball and two in track.
He also played in the American Football League for the Oakland Raiders. He played college football at Michigan State University. In football and baseball he was named to the All-state team twice.
He accepted a scholarship from Michigan State University, where he became a three-year starter at right halfback.
As a sophomore he was given the nickname "The Sprinting Blacksmith", after his efforts helped his team defeat University of California, Los Angeles in the 1956 Rose Bowl. He recorded 584 yards and 6 touchdowns in the season.
As a junior he was limited with a serious ankle sprain he suffered during fall practice and only registered 128 yards and 2 touchdowns. In 1957, he posted 545 rushing yards (54 yards average), 9 touchdowns and 7 receptions for 128 yards.
He placed third in the Heisman Trophy voting.
He finished his career with 1,257 rushing yards on 225 carries, 16 touchdowns, 10 receptions for 187 yards and one touchdown. Philadelphia Eagles
Kowalczyk was selected in the first round (6th overall) of the 1958 NFL Draft by the Philadelphia Eagles. He was a backup running back behind Clarence Peaks and Billy Ray Barnes.
He also was a backup defensive back behind Tom Brookshier and Eddie Bell.
On July 24, 1960, he was traded to the Detroit Lions in exchange for Jerry Reichow. Dallas Cowboys
Kowalczyk spent six weeks with the Detroit Lions in training camp, before his rights were sold to the Dallas Cowboys.
Although he initially refused to report to the team, he changed his mind after commissioner Pete Rozelle threatened to fine him. He became the first starting fullback in franchise history (7 starts), while sharing playing time with Gene Babb (5 starts).
He finished with 50 carries for 156 yards (third on the team) and 14 receptions for 143 yards (fifth on the team).
He was waived in on September 12, 1961. Oakland Raiders
On September 19, 1961, he was signed as a free agent by the Oakland Raiders of the American Football League. He retired after four games.
Kowalczyk became a teacher at Michigan State University.
National Intercollegiate All-American Football Players Honor Roll. He lives in the Rochester, Michigan area.
He is active in community activities and volunteers his time teaching Drivers Training classes.
He is a member of The Pigskin Club of Washington, District of Columbia