Jharel Cotton’s Changeup Is Objectively Impressive
Oakland right-hander Jharel Cotton made his major-league debut on Wednesday. The results were positive: over 6.1 innings, Cotton conceded just a lone run on two hits — the product, that run, of a homer by the Angels’ C.J. Cron. The process, while entirely adequate, was also slightly less positive: over those 6.1 innings and against those same 22 batters, Cotton recorded just three strikeouts.
In a sense, this start was the opposite of the sort which have defined much of Cotton’s season in the Pacific Coast League this year. Despite producing the best strikeout- and walk-rate differential (K-BB%) among all 57 Triple-A qualifiers in 2016, Cotton also recorded a 4.31 ERA — which, it turns out, is only the 35th-best ERA at Triple-A and even pretty middling among just PCL starters, too. The home runs were a problem for Cotton. Sequencing was a problem for Cotton. Controlling the strike zone wasn’t.
Apart from the runs he allowed and the runs he might have been expected to allow — whatever the discrepancy there — Cotton exhibited one quality yesterday that he’s exhibited all of this season and all of last season and maybe always since he was just a small child. An excellent changeup, is what. Lead prospect analyst Eric Longenhagen, among others, has described it as a plus-plus pitch — and it’s the presence of that pitch that has largely been credited with allowing Cotton to experience such great success as a professional despite a rather diminutive frame.