As a rookie, he caught eight passes for 95 yards and a touchdown in the Lions' divisional playoff game against the San Francisco 49ers.
He also had two touchdown catches in the Lions' victory over the Cleveland Browns in the 1957 NFL Championship Game.
[10][11] In the 1957 NFL Championship Game, he was the Lions leading scorer with 12 points and caught five passes, including touchdown receptions covering 26 and 23 yards.
[12][13][14] Junker suffered a knee injury in an Xavier alumni football game in the spring of 1958.
[1] In September 1961, the Lions traded Junker to the Washington Redskins in exchange for Johnny Olszewski.
[1] In 1963, after retiring from football, Junker began a long association with Wilson Realty Co. in the Cincinnati area.