After a disappointing 2-1 loss on Opening Day, the Colorado Rockies will look to even the series against the Miami Marlins. However, one bright note was first baseman TJ Rumfield. Rumfield made his MLB Debut last night, and is the only member of the Opening Day roster with true rookie status. He also became the 10th Rockie to make their MLB debut on Opening Day and the fifth to start the game — the last to do so was shortstop Trevor Story in 2016. Rumfield also hit a broken-bat single in the ninth inning, becoming the 60th Rockie to record a hit in the first MLB game (last: Kyle Karros on Aug. 8, 2025).
Michael Lorenzen will make his Rockies debut after joining the team on a one-year, $8 million contract in the offseason. The right-hander boasted about his desire to join the Rockies and work towards solving the problem of pitching at altitude. Spring training saw Lorenzen make four starts where he went 0-1 with a 10.97 ERA. However, he also pitched for Team Italy in the World Baseball Classic. Most notably, Lorenzen had a stellar outing against Team USA in the last game of Pool Play where the Italians won 8-6 after going up early but allowing the US to claw its way back. Lorenzen has faced the Marlins 17 times (six starts) and owns a 4-2 record with a 2.33 ERA. In loanDepot Park, he is 2-2 with a 2.76 ERA.
Lorenzen will face Marlins’ right-hander Eury Pérez. Pérez was signed by the Marlins out of the Dominican Republic in 2019 and made his MLB debut in 2023. However, he missed all of 2024 due to elbow inflammation that eventually led to Tommy John surgery. He returned in June 2025 and ended up pitching 20 games for the Fish, going 7-6 with a 4.25 ERA over 95.1 innings. Pérez has faced the Rockies twice in his young career, both times at Coors Field, going 1-1 with a 2.89 ERA.
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