The Rockies placed Darnell on the 15-day injured list Friday with left hip inflammation.

Darnell had made nine relief appearance since being added to the Rockies' roster, posting a 3.86 ERA but an ugly 5:7 K:BB over 11.2 innings. He will be eligible to return Sept. 6, but it's unclear whether he'll be ready at that time.

The Rockies recalled Chivilli from Triple-A Albuquerque on Friday.

Chivilli was optioned to Triple-A last Friday after a week-long stint on the restricted list. The 23-year-old will rejoin the Rockies bullpen ahead of a three-game series in Pittsburgh. Chivilli has a 7.29 ERA and a 31:19 K:BB across 42 innings with Colorado this season.

The Reds transferred Gibaut (shoulder) from the 15-day injured list to the 60-day injured list Friday.

The transaction frees up a spot on the 40-man roster for the addition of Zach Maxwell. Gibaut is set to miss the remainder of the season following arthroscopic surgery on his right shoulder.

The Reds selected Maxwell's contract from Triple-A Louisville on Friday.

Maxwell will make his MLB debut when he gets into a game. The 24-year-old reliever has a 4.17 ERA and a 1.50 WHIP with a 59:32 K:BB across 49.2 innings for Louisville in 2025. Ian Gibaut (shoulder) was transferred to the 60-day injured list in a corresponding move.

Cruz (shoulder) is throwing from about 75 feet and is in the beginning stages of his throwing progression, MLB.com reports.

Cruz was placed on the injured list Aug. 3 with right shoulder tendinitis and, per manager Matt Quatraro, is still in the early stages of his rehab. While no firm return date has been set, the slow pace of his recovery suggests the 26-year-old is more likely to return sometime in September than by the end of August.

Cruz (oblique) is slated to make a four-out minor-league rehab appearance Friday, and if that goes well, he could be activated from the injured list as soon as Monday, per MLB.com.

Cruz landed on the injured list in late June due to a left oblique strain. The veteran reliever kicked off a minor-league rehab stint Aug. 14 and has appeared in three games so far (two with Triple-A Scranton/Wilkes-Barre and one with Double-A Somerset), allowing four runs on five hits with a 4:1 K:BB over 2.1 innings. Though those numbers are poor, Cruz's most recent outing was strong -- he struck out the side and gave up only one hit over one scoreless frame Tuesday. Once activated off the IL, Cruz should be a candidate for high-leverage work, though he may be eased back given his lengthy absence. He also may be lower on the depth chart than when he last pitched, as New York added David Bednar and Camilo Doval to the bullpen at the trade deadline.

Zerpa (5-1) earned the win in Thursday's 6-4 victory over the Rangers. He allowed no hits or walks while striking out one over 1.2 innings.

The left-hander entered in relief of Michael Lorenzen with the bases loaded and one out in a tie game in the fifth inning Thursday and induced an inning-ending double play before tossing a perfect sixth frame. Zerpa has been on a roll, stringing together seven straight scoreless outings and posting a 2.43 ERA over 29.2 innings across his past 30 appearances.

Boyle (1-3) allowed six runs (five earned) on nine hits and three walks while striking out five over four innings to take the loss versus the Cardinals on Thursday.

The one bright spot was that he kept the ball in the yard for just the second time in his last six outings. Boyle has allowed at least six runs three times in that span, and he's also issued three or more walks in three of those starts. For the season, the 26-year-old is at a disappointing 5.40 ERA, 1.39 WHIP and 39:21 K:BB through 36.2 innings over 10 appearances (six starts). Boyle is tentatively projected to make his next start at Cleveland.

Silseth was optioned to Triple-A Salt Lake on Thursday.

Silseth was recalled Wednesday but will head back to the minors just one day later. He has yet to pitch in the majors in 2025, but he's maintained a 3.50 ERA and 1.33 WHIP with a 41:24 K:BB across 36 innings with Salt Lake.

Romero allowed a hit and struck out three over two scoreless innings to earn the save in Thursday's 7-4 win over the Rays.

Romero was brought in for the eighth inning and threw 15 pitches in that frame. He stayed in for the ninth and added 11 more pitches to secure his fourth save of the season. It's encouraging usage for Romero, who had two losses, one blown save and two holds over hos previous four appearances, which made it look like his time as closer was over just weeks after it started. The lefty reliever has a 2.31 ERA, 1.26 WHIP and 45:21 K:BB while adding 18 holds over 46.2 innings this season. Riley O'Brien has had a fairly stable August compared to Romero, which has pushed the Cardinals' late-inning situation into more of a committee approach.