Rocker did not factor into the decision in a win over Seattle on Thursday, allowing one run on three hits and two walks over four innings while striking out seven.
Rocker held his own in his big-league debut, recording seven strikeouts over four innings while generating 17 whiffs. The 24-year-old also managed to pitch his way out of a few jams after allowing the leadoff man to reach in the first and third innings, though he would be relieved by Gerson Garabito to open the fifth after reaching 74 pitches. Rocker will look to improve upon his promising first start next week, assuming the Rangers keep the rookie around for at least another turn in the rotation.