One of our regular posters commented that he had read that the two quickest journeys ever from low-A Quad Cities to the show are Joe Kelly, at just under two years, and Trevor Rosenthal, at 10 months.
I noted that felt a bit artificial to me since the St. Louis Cardinals kept Rosenthal with the River Bandits all of last year. During the same period, they promoted a number of other top pitching prospects in-season, including Rosenthal’s rotation mates, some more than once.
I am not being critical of Rosenthal or how he was handled in any way. During the prior two years in short-season ball, he had pitched just 24 and 32 innings, respectively. Spending that full year at one level in 2011 seemed to work for him.
Despite all that, it isn’t the primary purpose of this post. Rather than time spent in the minors, I decided to analyze what I believe to be a more interesting comparison – number of innings thrown in the minor leagues.
All things equal, one would think that college-trained p...