Michelosen was a native of the Pittsburgh suburb of Ambridge, Pennsylvania. Michelosen got his start in football playing quarterback at Ambridge High School, under coach Maurice "Moe" Rubenstein. He attended the University of Pittsburgh where he played for Jock Sutherland. He started for three years, playing on Pittsburgh's national championship teams in 1936 and 1937. He was a team captain in 1937. He was also a member of the Kappa Sigma Fraternity. After his college career, Sutherland and Michelosen continued their relationship as coach and player with the Brooklyn Dodgers and the Pittsburgh Steelers until Sutherland's death in 1948. Michelosen was the backfield coach on the 1946 and 1947 Pittsburgh Steelerscoaching staff.
Michelosen served as a naval flight instructor for three years in World War II.
Coaching career
After graduating, Michelosen joined Pitt's staff as an assistant football coach.
Pittsburgh Steelers
In 1948 Michelosen became the youngest head coach of any National Football League team in the league's "modern era" when he took command of the Steelers. At the age of 32 years and two months he remained the youngest head coach in NFL history until 1962 when Harland Svare beat him out by four months in mid-season. Michelosen held on to the distinction of being the youngest coach ever to start an NFL season until the Oakland Raiders hired Lane Kiffin in 2007. Under Michelson's leadership, the Steelers continued to run the Sutherland style Single Wing Offense. They were the last NFL team to discontinue the scheme as a primary offense. Michelosen's tenure as Steelers head coach lasted until 1951 and he compiled a 20–26–2 record. In 1949 Michelosen guided the Steelers to a second place finish in the NFL's Eastern Division. At the time only division champions qualified for post-season play.
Pittsburgh Panthers
Michelosen returned to the University of Pittsburgh in 1955 and served as head football coach for 11 seasons, through the 1965 campaign. He led Pitt to back-to-back major bowl games in the 1950s. His 1963 team finished the season with a 9–1 record and ranked #3 and #4 in the major polls, but was not invited to a bowl game, perhaps due to the postponement of a game against Penn State following the assassination of John F. Kennedy. Michelosen put together a 56–49–7 record over 11 seasons, with only four losing campaigns. Pitt was ranked as high as #3 in the nation during the height of his coaching career and was ranked among the top ten programs six seasons and the top 25 for seven seasons with Michelosen at the helm.
Legacy and honors
Michelosen was an influence on NFL greats such as Mike Ditka and Marty Schottenheimer, both of whom were born and raised near Pittsburgh and played for Pitt in the 1950s. Michelosen also has a place in the civil rights history of the country, guiding the first team to break the color barrier in the southern bowls. In the 1956 Sugar Bowl, Pittsburgh became the first sports team ever to field an African American player in the deep south. Michelosen was inducted into the Pennsylvania Sports Hall of Fame in 1970.
