A pitcher who threw left-handed and batted right-handed, Luebke was born in Chicago, stood 6 feet 4 inches (1.93 m) tall and weighed 200 pounds (91 kg).
After a productive season as a left-handed relief pitcher for the Rochester Red Wings of the Triple-A International League – ten wins in 17 decisions, and an earned run average of 1.77 with 43 hits allowed in 61 innings pitched[1] – Luebke made his Major League debut on August 10, 1962, at Fenway Park against the Boston Red Sox.
In relief of Baltimore starting pitcher Robin Roberts, a future Hall of Famer, Luebke pitched a one-two-three eighth inning, retiring Eddie Bressoud, Carroll Hardy and Carl Yastrzemski in order.
During the offseason, however, the Orioles traded Luebke and minor-league infielder Willard Oplinger to the Cincinnati Reds for outfielder Joe Gaines.
Luebke was not listed on the Reds' 40-man spring training roster for 1963,[3] and spent the year with their Triple-A affiliate, the San Diego Padres of the Pacific Coast League, before leaving baseball.