Hall (oblique) is expected to be sidelined until mid-September, Todd Rosiak of the Milwaukee Journal Sentinel reports.

Hall was placed on the 15-day injured list this past weekend after suffering a mild right oblique strain. He will be shut down until late August before beginning a throwing program, provided his symptoms subside. Hall has been used as a multi-inning reliever, so it will take a bit for him to be built back up once he's throwing again.

Walker picked up a hold in Monday's 4-3 win over San Diego, allowing two hits while striking out one over 1.1 innings.

Walker entered the game with two outs in the seventh, surrendering a single before escaping the inning. The right-hander gave up another single to the first batter he faced in the eighth but followed it with a strikeout before inducing an inning-ending double play. He threw 13 of his 17 pitches for strikes en route to his first hold since June 27. Over six appearances in August, Walker has recorded a 1.50 ERA, 1.33 WHIP and a 4:1 K:BB across six innings.

The Cubs optioned Hollowell to Triple-A Iowa on Monday, Maddie Lee of the Chicago Sun-Times reports.

He was technically up as the 27th man for what was supposed to be a doubleheader Monday versus the Brewers, though the second game got rained out. Hollowell was roughed up for four runs over two innings in the first game Monday and is now headed back to Iowa.

The Cubs recalled Cosgrove from Triple-A Iowa on Tuesday, Maddie Lee of the Chicago Sun-Times reports.

Cosgrove will join the Cubs ahead of Tuesday's doubleheader with the Brewers, though it's unclear if he or another player will be sent back to Iowa once the twin bill concludes and Chicago needs to reduce its active roster to 26 men. The 29-year-old southpaw reliever has made just two appearances in the majors this season but has seen ample usage for Iowa, logging a 4.66 ERA and 1.65 WHIP while striking out 47 batters across 38.2 innings over 33 outings.

The Cubs optioned Little to Triple-A Iowa on Tuesday, Maddie Lee of the Chicago Sun-Times reports.

Little's stint in the majors lasted only one day, and he allowed one unearned run while fanning four over two innings of relief in Monday's 7-0 loss to the Brewers. The big left-hander is being replaced on the active roster by Tom Cosgrove, who was recalled from Triple-A.

Atlanta recalled Seabold from Triple-A Gwinnett on Tuesday.

Seabold was claimed off waivers earlier this month and is now headed to the majors. The right-hander has permitted one run with a 5:3 K:BB over 6.2 frames at the big-league level this season. Seabold has made 10 starts in 2025 at the Triple-A level, so he has the ability to eat up some innings out of the bullpen.

Atlanta recalled Dunning from Triple-A Gwinnett on Tuesday.

Dunning has been torched for nine runs over 5.2 innings during his time with Atlanta. He will give the bullpen some length.

Atlanta optioned Stratton to Triple-A Gwinnett on Tuesday.

Stratton has tossed six scoreless innings during his time with Atlanta -- which includes a three-inning save in his last appearance -- but will nonetheless head back to the minors to make room for another reliever.

Atlanta optioned Hernandez to Triple-A Gwinnett on Tuesday.

Hernandez has managed a 2.72 ERA in 36.1 innings this season, but a 33:30 K:BB doesn't paint a pretty picture. He'll report to Gwinnett as Atlanta adds a fresh bullpen arm in his place.

Barlow walked one and struck out four over 1.1 scoreless and hitless innings to earn the save in Monday's 4-1 win over the Angels.

The Reds were a bit thin in the bullpen Monday, as all of Emilio Pagan, Tony Santillan and Graham Ashcraft had pitched Saturday and Sunday. Barlow stepped up for the four-out save, throwing 14 of 25 pitches for strikes. While this was his first save of 2025, Barlow had earned 58 saves from 2019-2024. He's added 13 holds and a blown save while pitching to a 3.54 ERA, 1.32 WHIP and 61:34 K:BB across 56 innings. He's not the top option for ancillary saves, but Barlow remains part of the Reds' high-leverage mix.