The Rockies are set to call up left-hander Mark Manfredi, according to Kiley McDaniel of ESPN. Colorado has three open spots on its 40-man roster, so the move will only require a corresponding active roster transaction.
For Manfredi, it’s the first big league promotion of his career. The 26-year-old was a ninth-round pick by the Brewers in 2023 and only recently landed in Colorado as part of the deadline deal that sent Antonio Senzatela to Milwaukee.
Manfredi began his pro career working both as a starter and a reliever, but since the start of 2025 he’s been used strictly out of the bullpen. The results have been mixed in the usual way for a power arm with swing-and-miss stuff and shaky command.
Over 50 2/3 Triple-A innings this season, he has posted a 4.09 ERA. His 34.1% strikeout rate jumps off the page, but so does the 12.7% walk rate, with 28 free passes issued to the 220 hitters he has faced.
He has also hit five batters and thrown three wild pitches.
FanGraphs has Manfredi ranked as the No. 46 prospect in the Colorado system and points to his fastball as his top weapon. The pitch sits in the 93-97 mph range and has accounted for nearly 60% of his offerings this year. He also mixes in two breaking balls and a changeup.
Colorado’s pitching staff has plenty of opportunity attached to it right now. In the bullpen, Jordan Romano, Jimmy Herget and Brennan Bernardino are the only pitchers with more than two years of service time.
Romano is headed toward free agency, while Bernardino and Parker Mushinski are the only left-handers in the group. Mushinski has fewer than 40 major league innings and has struck out just 14.2% of opposing hitters in that span.
That leaves a lane for Manfredi to try to carve out a role, even if the command is still very much a work in progress. The Rockies can see how his stuff stacks up against major league hitters, and because he has options remaining, they can also move him back and forth to Triple-A until he proves he belongs.
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