Brandon Beachy's Decisions/Games Started

I was looking at some statistics to see if more innings pitched by a starting pitcher (min 20 starts) resulted in a higher percent of starts that resulted in a decision. The result was not a strong correlation, but was really stood out to me was Brandon Beachy. In only 37.5% of his starts, he got a win or a loss, by far the lowest in all of baseball. The second lowest in all of the MLB (min 20 starts) was Randy Wells with 54.5% and the average is about 73%.