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

Lourdes Gurriel Jr's two-run single in the seventh lifted Arizona to the win and sent Cleveland to its fourth loss in five games.

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 Guardians provided a progress report on many prospects, including Travis Bazzana and Chase DeLauter, who has resumed baseball activity amid rehab.

CJ Kayfus and Brayan Rocchio homered, Gavin Williams pitched 5⅓ scoreless innings and the Cleveland Guardians beat the Arizona Diamondbacks Aug. 18.

Miami's surging rotation heads to Cleveland with multiple starters to create a daunting challenge for Guardians' offense.

The Guardians have been one of MLB’s hottest teams over the last few weeks, primarily because of the offense. Cleveland had a team slash line of 251/.326/.421 from the All-Star Break heading into their series against the Braves.

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.