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Kumar Rocker Was Electric in His Long-Awaited Major League Debut

Rocker struck out seven and generated 17 whiffs in four innings.

Kyle Koster

Rocker finally made his first MLB start and it was worth waiting for.
Rocker finally made his first MLB start and it was worth waiting for. / Steven Bisig-Imagn Images
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Kumar Rocker showed the type of nasty stuff that has made him one of baseball's most alluring pitching prospects in his Major League Baseball debut. The Texas Rangers rookie pitched four innings of one-run ball and struck out seven Seattle Mariners while routinely missing bats. It's been a long and difficult road for the 25-year-old but his arsenal suggests he may still have a bright future.

Rocker racked up a sky-high 17 whiffs, the most for a Rangers pitcher making his debut since 2008 and the most over a four-inning span since Max Scherzer, per MLB.

“I feel like the whole game I was trying to find my rhythm, and that’s just, that’s part of the moment, that’s part of it being a new experience,” Rocker said postgame. “And can’t really get frustrated from it, but learn from it.”

Rocker was a standout at Vanderbilt and the New York Mets' first-round pick in 2021. Injury concerns kept him from being signed. The Rangers drafted him in 2022 but he needed Tommy John surgery a year later. He had put together a 1.96 ERA in the minor leagues this season before getting the call-up.

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Kyle Koster

KYLE KOSTER

Kyle Koster is an assistant managing editor at Sports Illustrated covering the intersection of sports and media. He was formerly the editor in chief of The Big Lead, where he worked from 2011 to '24. Koster also did turns at the Chicago Sun-Times, where he created the Sports Pros(e) blog, and at Woven Digital.

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