Cincinnati Reds In 1971, Osburn began his professional career in the
Cincinnati Reds organization. He attended
spring training with the Reds, officially making it his professional debut. Reds'
manager Sparky Anderson hinted during spring that it could be a possibility that Osburn could make the final 25-man roster., He was assigned to the Triple-A
Indianapolis Indians. In July, Osburn had the lowest
earned run average (ERA) in the
American Association. On the season, he went 8–8 with a 2.51 ERA, five
complete games, two
shutouts, and 125
strikeouts in 27 games, all starts. Osburn was fifth in the league in strikeouts, and ninth in ERA. Osburn joined the Reds as a non-roster invitee for spring training in 1972. He started the season with the Triple-A Indianapolis Indians. On the season, Osburn went 8–8 with a 5.28 ERA, one complete game, and 71 strikeouts in 26 games, 24 starts. In 1973, Osburn again started the season with the Indians of the American Association. During the season, Osburn had a five-game winning streak until August 18. He finished the season with a record of 11–7 with a 3.69 ERA in 28 games, 27 starts. Out of spring training in 1974, Osburn made the Reds' 25-man roster. He made his major league debut on April 13, against the
Atlanta Braves, where in two
innings pitched Osburn gave-up three
earned runs. After sustaining an injury in June, Osburn was sent down the Triple-A Indianapolis Indians by the Reds. Pitcher
Dick Baney was called up in place of Osburn. In the majors that season, Osburn was involved in no
decisions with an 8.00 ERA, and four strikeouts in six games. During his time in the minors, Osburn went 2–3 with a 2.54 ERA, one complete game, and 28 strikeouts in 11 games, seven starts. The
Associated Press reported that Osburn "quit" after being sent to the minors.
Later career On October 22, 1974, the Cincinnati Reds traded Osburn to the
Milwaukee Brewers for
John Vukovich. He was then assigned to the Triple-A
Sacramento Solons of the
Pacific Coast League. Early in the season, Osburn was placed on the disabled list with a sore arm. On August 28, the Brewers noted that they would only call-up one player when the roster expanded to 40 players on September 1, and that it would be Osburn. In the minors that season, Osburn went 7–7 with a 4.62 ERA, three complete games, one shutout, one
save, and 85 strikeouts in 28 games, 15 starts. In the majors, Osburn went 0–1 with a 5.40 ERA, and one strikeout in six games, with one start. On December 22, 1975, Osburn was traded by the Brewers to the
Kansas City Royals for outfielder Kenzie Davis. Osburn spent the entire 1976 season with the Double-A
Jacksonville Suns of the
Southern League. On the season, he went 7–4 with a 2.32 ERA, seven complete games, two shutouts, and 52 strikeouts in 14 games, all starts. That season would prove to be his last in professional baseball. ==Personal life==