Career
He was a right-handed pitcher who appeared in 240 games in the Major Leagues over eight seasons (1982–1989) for the Texas Rangers. Minnesota Twins and Boston Red Sox. Smithson stood 6 feet 8 inches (203 m) tall and weighed 215 pounds (98 kg).
After attending the University of Tennessee, Smithson was selected by the Red Sox in the fifth round of the 1976 Major League Baseball Draft.
During the course of his seven-year minor league apprenticeship, he participated in the longest baseball game in history between the Pawtucket Red Sox and Rochester Red Wings during the 1981 season. During the early morning hours of Sunday, April 19, 1981, he worked the full 15th, 16th and 17th innings, and got two outs in the 18th inning before turning the ball over to Win Remmerswaal.
Smithson allowed two hits and three bases on balls in 32⁄3 innings pitched—but no runs. After attending spring training with the 1982 Red Sox, Smithson was traded to the Rangers on April 9 for left-handed relief pitcher John Henry Johnson.
He was recalled by the Rangers from the Triple-A Denver Bears and began his MLB career late in August as a starting pitcher—the role he would play for much of his big-league tenure.
The Red Sox brought Smithson back as a free agent in 1988, and he spent two seasons with them as a swing man, making 37 starts in 71 games. Altogether, Smithson allowed 1,473 hits and 383 bases on balls in 1,3561⁄3 innings of big-league work. He made 204 starts out of his 240 total games pitched, and recorded 731 strikeouts, 41 complete games, six shutouts and two saves.
He retired after the 1989 campaign.
In 2009, he was named to the University of Tennessee"s All Century Team.