Cleveland Guardians newly promoted left-handed starter, Parker Messick had an outstanding debut against the Arizona Diamondbacks.

Guardians prospect Parker Messick shined in his MLB debut on the mound, but the Cleveland bullpen let him down in an extra-inning loss.

Now, Cleveland’s No. 12 prospect ( according to MLB Pipeline) is set to make his MLB debut today in the series finale vs. the Arizona Diamondbacks at Chase Field. Messick joins the starting rotation in place of Joey Cantillo, who was optioned to Triple-A Columbus on Sunday.

Parker Messick can finally say that he’s a big-league pitcher! The 24-year-old made his Cleveland Guardians and MLB debut on Wednesday afternoon against the Arizona Diamondbacks.

The 10-game losing streak lasted from June 26 through July 7. It threatened to end the Guardians’ season with three months left on the schedule. It wasn’t just a 10-game losing streak, it was a tsunami.

The Cleveland Guardians might have little to play for in 2025, but rookie starting pitcher Parker Messick's first major league start offered a promising glimpse into their future.

The Cleveland Guardians had opportunities, but couldn't capitalize in their series loss to the Arizona Diamondbacks.

The Guardians have lost four of five and remain three games out of the third and final American League wild-card position.

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CLEVELAND, Ohio (WOIO) - Leigh Steinberg, an NFL agent for more than 40 years, told 19 News it’s “absolutely” possible that Guardians pitchers Emmanuel Clase and Luis Ortiz, on leave for potential gambling, will never pitch again in the majors.