Lawrence (elbow) walked one and struck out three in a scoreless frame in his first rehab appearance with Single-A Bradenton on Tuesday.

Lawrence is finally game-ready again after missing nearly four months with right elbow inflammation. He'll likely require a handful of rehab outings before rejoining the Pirates bullpen. Lawrence had permitted just one run with a 15:6 K:BB over 11.1 frames before getting injured.

Mayza (lat) allowed two hits and struck out one in two-thirds of an inning in his first rehab appearance with Single-A Bradenton on Tuesday.

Mayza has been shelved since late April with a left lat strain but is gearing up for a return to the Pittsburgh bullpen. Given the amount of time he's missed, he'll likely require a few more rehab appearances before being activated from the 60-day injured list. The veteran lefty had yielded only three runs with an 8:1 K:BB over 9.1 innings for Pittsburgh before getting hurt.

O'Brien earned the save in a 7-4 win over the Marlins on Tuesday. He did not allow a hit but walked two and also struck out two in a scoreless inning.

O'Brien was called upon for the save chance after JoJo Romero pitched against the heart of the Miami order in the eighth. Things did not begin well for O'Brien, who walked consecutive batters to open up the inning, but he rebounded with back-to-back strikeouts before getting a groundout to end the game. O'Brien now has two saves to Romero's three since the departure of Ryan Helsley at the deadline. O'Brien has found his footing this season, posting a 1.56 ERA, 1.18 WHIP and 34:17 K:BB in 34.2 innings.

Gibaut (shoulder) has been scheduled to undergo arthroscopic surgery, MLB.com reports.

Gibaut was pulled off a rehab assignment earlier this month when his arm didn't respond well following an outing. No date for the surgery was provided, nor was an expected timeline for his recovery.

Saalfrank struck out one in a perfect inning to earn the save in Tuesday's 6-5 win over the Guardians.

Saalfrank took a blown save in Colorado on Saturday, allowing two runs in two-thirds of an inning. He bounced back with a sharp outing Tuesday, needing just nine pitchers to retire the Cleveland trio of Jose Ramirez, Kyle Manzardo and Carlos Santana. It's interesting that Saalfrank got the nod for this save when fellow left-hander Jalen Beeks had pitched just once over the previous four days. Arizona's bullpen has turned into a full-blown committee throughout the year between injuries and ineffectiveness. Saalfrank has been a breath of fresh air, pitching to a 1.72 ERA, 1.09 WHIP and 10:5 K:BB over 15.2 innings while picking up two saves and one hold. It's unclear if this outing is a signal that the 28-year-old will be competing for more save chances down the stretch, but he has taken care of business in lower-leverage spots to earn a larger role.

Santillan struck out two over a perfect inning to earn the save in Tuesday's 6-4 win over the Angels.

Emilio Pagan pitched Saturday and Sunday, but he's been held out of save opportunities Monday and Tuesday. Santillan got the job done on 12 pitches Tuesday after Scott Barlow converted the save Monday. Santillan has had mixed results in August, allowing three runs over 7.2 innings with a 9:6 K:BB, though he's also picked up five holds and a blown save. He remains in the high-leverage mix, and if the Reds' bullpen becomes a committee, that would likely increase his save share. For the season, Santillan has a 2.79 ERA, 1.09 WHIP and 57:22 K:BB with four saves and 27 holds across 58 innings.

Jansen said after Tuesday's loss to the Reds that he's dealing with "something physical" but declined to disclose the nature of the issue, Jeff Fletcher of The Orange County Register reports.

When asked if he would miss any time, Jansen said, "Just gonna take it day by day and see where we're at." Jansen took the loss against the Reds on Tuesday, allowing two earned runs on two hits and one walk while striking out one over one inning. Just 11 of his 22 pitches in the top of the ninth were thrown for strikes. Reid Detmers would be a candidate for saves should Jansen need to miss any action.

Harris earned a save with a perfect inning against Minnesota on Tuesday.

Harris retired the Twins' 6-7-8 hitters in order to close out the 6-3 win after Justin Sterner threw two scoreless frames out of the bullpen. It was Harris' first save chance of the year, and he's now thrown 6.2 shutout innings since rejoining the MLB roster Aug. 9. He joined Sean Newcomb as the only Athletics to record saves since Mason Miller was dealt to San Diego. It seems most likely that the team will continue using a committee approach for late-inning opportunities.

Kittredge tossed a scoreless ninth inning to record the save in the second game of Tuesday's doubleheader against the Brewers.

Regular closer Daniel Palencia secured the save in the first game Tuesday, but the Cubs didn't use him for the nightcap, instead turning to Kittredge to protect a 4-1 lead. The veteran righty breezed through the top of the ninth inning on 10 pitches, giving him his second save in the last three days. Palencia is still the top option out of the Chicago bullpen, but it appears that Kittredge has earned some trust in late-game situations when needed.

Vest (6-2) tossed two scoreless innings of relief to earn the win in Tuesday's 1-0, 10-inning victory over the Astros. He allowed a hit and struck out one.

Vest successfully navigated the top of the ninth and 10th innings, then earned the win when Gleyber Torres ended the game on a walk-off walk. The veteran reliever came into the season with only nine career wins at the MLB level, and his previous high in a season was three. Vest also leads the Tigers with 18 saves, and he's struck out 61 batters across 55 innings this year to go along with a strong 2.45 ERA, giving him plenty of fantasy value across the board.