According to Wikipedia, Mr. Eichhorn seems to have had an amazing career.  In 1982, only 38 innings into his pro career, he suffered a major shoulder injury, which robbed him of his velocity.  He didn’t resurface in the majors until 1986, with an extreme sidearm delivery.  That year, he pitched 157 innings, AS A RELIEF PITCHER! His ERA was 1.72, his WHIP was .955, and he struck out 166 batters.  Had he pitched five more innings, he would have qualified for the AL ERA title.

In his 11 seasons in the pros, Mr. Eichhorn had three seasons in which his ERA+ was over 200, and five more seasons when it was over 123.

Oh, and for part of his career, he was the setup man for Tom Henke.