Today, in his second, the 24-year-old looked a lot like a guy who had pitched fewer than 50 innings across all levels this summer. Rocker walked four and racked up 71 pitches in three laborious innings, exiting with the Rangers trailing 2-0. Something tells me this start won’t make the career retrospective.

Statcast classifies Kumar Rocker’s nasty breaking pitch as a slider. He calls it a curveball and a “slider at times.” It was the most effective tool in his Texas Rangers debut last Thursday against the Seattle Mariners and secured five of his seven strikeouts.