Halvorsen (elbow) is continuing his rehab, but he will not begin the next steps toward his return to the field until early September, MLB.com reports.

The Rockies continue to say that Halvorsen could return this season, but it appears that he will only be available for a few weeks at best. His role upon his return could also be murky, as Victor Vodnik has turned in five consecutive scoreless appearances, piling up four saves and a win.

Waldrep (4-0) picked up the win Wednesday, allowing four hits and a walk over seven scoreless innings in a 1-0 victory over the White Sox. He struck out seven.

The rookie right-hander was impressive once again, firing 60 of 87 pitches for strikes as he tied his career high in Ks. Waldrep has won all four of his starts since being brought up at the beginning of August, producing a stellar 0.73 ERA, 0.77 WHIP and 24:6 K:BB over 24.2 innings. The 2023 first-round pick will look to keep rolling in his next outing, which is scheduled to come on the road early next week in Miami.

Crismatt is slated to start Saturday's game against the Reds at Chase Field.

A journeyman reliever for most of his first six seasons in the big leagues, Crismatt had been getting stretched out in the Triple-A Reno rotation before the Diamondbacks called him up this past Sunday to make his second career MLB start. The 30-year-old righty was unfazed by the harsh pitching conditions at Coors Field, taking a no-decision and striking out five batters over five innings while limiting the Rockies to one run on three hits and one walk. He'll return to a slightly more forgiving pitching environment in Arizona for his second turn through the rotation, though Crismatt's lack of a track record as a starter in the big leagues will make him difficult to trust as a streaming option until he strings together a few more promising appearances.

Morgan (elbow) tossed a perfect inning in his first rehab appearance with High-A South Bend on Wednesday.

Morgan initially went down with a right elbow impingement in mid-April and then suffered a setback while on his initial rehab assignment in mid-June. He's now getting back on track and could rejoin the Cubs' bullpen around Sept. 1 if all goes well.

Ferrer gave up a hit in a scoreless ninth inning Wednesday to record his third save of the season in a 5-4 win over the Mets.

The southpaw was able to erase a one-out single by Cedric Mullins with a game-ending double play thanks to a 97.9 mph sinker. Ferrer has pocketed three of the Nationals' four saves in August, with Cole Henry notching the fourth, and the former is the clear top option for closing duties in the bullpen. Over 17.1 innings since the beginning of July, Ferrer has posted a 2.08 ERA, 1.21 WHIP and 15:2 K:BB.

Lord (4-6) picked up the win in Wednesday's 5-4 victory over the Mets, giving up four runs on seven hits and two walks over 5.1 innings. He struck out four.

The right-hander blanked New York for four innings before the wheels began to come off, but Washington gave Lord enough offensive support to get him into the win column. The four runs were the most he'd allowed in an outing since moving back into the rotation after the All-Star break, and over six starts during that span he's posted a 3.45 ERA, 1.24 WHIP and 21:8 K:BB in 31.1 innings. Lord faces a tough test in his next trip to the mound, which is scheduled to come on the road early next week in Yankee Stadium.

Palencia recorded the save in Wednesday's 4-3 win over Milwaukee, allowing one run on two hits and two walks in the ninth inning. He struck out two.

Palencia allowed a run for the fourth time in his last seven outings, but he was able to hang on for save No. 18 on the year. The right-hander has a shaky 5.14 ERA in August, but his ERA still stands at an excellent 1.97 for the season over 45.2 innings. Palencia has blown just two saves all year, and he also sports a 1.01 WHIP and 49:14 K:BB through 44 appearances.

Thielbar, who tossed 1.1 scoreless innings of relief with two strikeouts in Wednesday's win over the Brewers, has 13 scoreless appearances across his last 14 outings.

The only blemish in the stretch of scoreless outings for Thielbar was his Aug. 3 appearance when he allowed a game-winning, two-run home run to Baltimore. The veteran southpaw has been outstanding all season for the Cubs, as he now has a 2.12 ERA and 46 strikeouts across 46.2 innings. Thielbar has been particularly tough against left-handed batters, limiting them to just a .125 batting average.

Yates (back) is expected to be activated from the 15-day injured list ahead of the Dodgers' upcoming weekend series against the Padres, Bill Plunkett of The Orange County Register reports.

Both Yates and Tanner Scott (elbow) began a rehab assignment this week and each got an inning of work Tuesday with Triple-A Oklahoma City. Manager Dave Roberts said both will "probably not" pitch again in the minors prior to rejoining the Dodgers' 26-man roster for this weekend's critical series. Yates hasn't pitched since July 26 and holds a 4.31 ERA, 1.31 WHIP and 44:12 K:BB across 31.1 innings out of the bullpen this season.

Scott (elbow) is expected to be activated from the 15-day injured list ahead of the Dodgers' upcoming weekend series against the Padres, Bill Plunkett of The Orange County Register reports.

Scott threw one relief inning during a rehab outing with Triple-A Oklahoma City on Tuesday, and manager Dave Roberts said Wednesday that Scott will "probably not" pitch again in the minors before rejoining the big-league club. Scott hasn't pitched with Los Angeles since July 21 and holds a 4.14 ERA, 1.16 WHIP and 50:11 K:BB across 45.2 innings this season. He's notched 19 saves and should be back in the closer mix once reinstated.