DONTRELLE WILLIS, SP, MARLINS, 2005
It might be slightly unfair to label Willis as a one-hit wonder since his first five major-league seasons were all pretty good, including his Rookie of the Year campaign in 2003.
However, he never came even close to what he did in 2005—34 starts, 22-10 record, 223.1 innings, 170 strikeouts, 2.63 ERA, 1.13 WHIP. Those are career highs in every statistical category, and the big lefty did it at the age of 23. The rest of D-Train’s career, however, is not so impressive. He couldn’t hit the strike zone, he couldn’t get batters out and he definitely couldn’t stay healthy. Willis, believe it or not, is 29 and is still trying to make it back to the big leagues, potentially as a reliever.