Colorado designated Michael Lorenzen for assignment, officially closing the book on a one-year, $8 million deal that went about as badly as it could go. The Rockies recalled righty TJ Shook from Triple-A Albuquerque to take his spot on the roster, and that's the whole transaction in a nutshell: out with the veteran, in with the kid.

The numbers explain the move pretty clearly. Lorenzen posted a 7.08 ERA across 26 appearances and 115 2/3 innings this season, with a strikeout rate way below league average. Coors Field, as it does to just about everyone, made things worse — he was sitting at a 9.12 ERA at home compared to 5.61 on the road. That's not a small-sample blip, that's a full season of getting hit.
Colorado signed Lorenzen back in January as part of a broader pitching makeover that also brought in Jose Quintana and Tomoyuki Sugano. The idea was a stabilizing veteran arm in a rotation that desperately needed one. Instead it turned into another cautionary tale about signing free-agent pitchers to pitch half their games a mile above sea level.
Lorenzen, 34, is no stranger to reinvention. He's bounced between starting and relieving for the Reds, Angels, Tigers and Phillies, and he's still remembered for tossing a no-hitter in his second start after being traded to Philadelphia in 2023. His career numbers back up the split too — a 3.73 ERA out of the bullpen versus 4.71 as a starter, which suggests his best path forward from here is back to a relief role.
Because he's got more than five years of service time, Lorenzen doesn't have to accept a demotion to the minors. He can simply reject the outright assignment and become a free agent while Colorado stays on the hook for the rest of his salary. That's actually good news for him — any contender looking for bullpen depth down the stretch can scoop him up at a prorated league minimum, with Colorado eating the difference. Cheap reclamation projects with All-Star pedigree and a no-hitter on the resume tend to find work in August.
For the Rockies, this is just one more subtraction in a lost season, and Shook's promotion is the kind of look-at-the-kids move rebuilding teams make once the standings stop mattering. For Lorenzen, the next month is about proving the Coors Field numbers were the exception, not the rule.