Thompson (shoulder) struck out a batter over a perfect inning during his rehab appearance for Triple-A Reno on Friday.

Friday's rehab outing was Thompson's second of the week, and Diamondbacks manager Torey Lovullo indicated Saturday that the reliever is likely to be activated when rosters expand Monday, per MLB.com. The right-hander has been on the 15-day injured list since July 6 due to a left trapezius strain.

Palencia surrendered one run on two hits without recording an out during Sunday's 6-5 loss to Colorado.

Palencia took the mound in the bottom of the ninth inning with the score tied and surrendered a single and a walk-off triple to the first two batters he faced. Palencia has had a rough August, having allowed six runs in 10.1 innings across 12 appearances. He has three losses and one blown save during that stretch. Palencia's ERA sits at 2.20 on the season.

Iglesias struck out two in a perfect inning to earn the save in Sunday's 3-1 win over Philadelphia.

Iglesias had a fantastic August, allowing one run while posting a 13:0 K:BB across 13 innings. He picked up 10 saves this month and is up to 23 on the year. While he's had some rough patches, as seen in his 3.81 ERA over 56.2 innings, he's also sporting a stingy 1.02 WHIP and 61:10 K:BB, which suggests his missteps have largely been bad luck rather than a deterioration of skill.

Mlodzinski is listed as the Pirates' starting pitcher for Tuesday's game against the Dodgers at PNC Park, Kevin Gorman of TribLive.com reports.

Mlodzinski will receive another turn through the Pittsburgh rotation, but for the second outing in a row, he'll most likely be deployed in tandem with rookie Bubba Chandler. In his previous start this past Wednesday versus the Cardinals, Mlodzinski was lifted after allowing one earned run over three innings and 46 pitches, with Chandler then taking over and getting credited with the win after tossing four shutout frames. Even if he's able to keep the Dodgers offense at bay Tuesday, Mlodzinski is unlikely to reach the five innings he would need to qualify for a win, making him an unappealing streaming option.

Lord (4-8) yielded seven runs on five hits and two walks over three innings Sunday, striking out three and taking a loss against the Rays.

The Rays jumped on Lord early with a huge six-run second inning, capped off by Brandon Lowe's grand slam. Lord gave up another run in the third and ended his afternoon with 62 pitches (36 strikes). Since rejoining the Nationals' rotation in late July, he had thrown at least four innings in all seven starts before Sunday's ugly outing. Lord posted a 4.54 ERA during that seven-start span. He now owns a 4.34 ERA with an 85:35 K:BB through 103.2 innings this season. Lord is projected for a road start against the Cubs next weekend.

Bivens allowed two runs on six hits and a walk while failing to record a strikeout over three innings, earning the save in Sunday's 13-2 win over the Orioles.

Bivens was able to help spare the bullpen and came away with his second career save. The right-hander has done fine in a multi-inning relief role this year. He allowed eight runs (six earned) while posting an 8:4 K:BB over 16 innings across nine appearances in August. For the season, he has a 4.28 ERA, 1.37 WHIP and 51:21 K:BB through 69.1 innings, all coming out of the bullpen.

Scott allowed three runs on three hits and a walk over one inning, taking a blown save in Sunday's 5-4 win over the Diamondbacks.

This wasn't shaping up as a traditional save chance for Scott, as he was brought in for a high-leverage spot in the eighth inning. He wasn't up to the task, allowing a three-run home run to Corbin Carroll that tied the game at 4-4. This was Scott's eighth blown save of the year and his first in three outings since returning from a month-long absence due to an elbow issue. The lefty reliever is 20-for-28 in save chances with a 4.44 ERA, 1.19 WHIP and 50:12 K:BB across 48.2 innings this season.

O'Brien has dealt with fatigue in his right shoulder area in recent days and is set to be examined by a doctor Monday, Derrick Goold of the St. Louis Post-Dispatch reports.

According to Goold, the Cardinals are weighing whether to place O'Brien on the injured list, and the results of his upcoming exam will likely be vital in that decision. With the active roster expanding to 28 players Monday, the Cardinals are likely to call up at least one pitcher from the minors, and the team could bring another relief arm aboard if O'Brien heads to the IL in a corresponding move. Since the beginning of June, O'Brien has performed as one of the Cardinals' top relievers, logging two wins, two saves and five holds while pitching to a 1.04 ERA and 1.07 WHIP over 34.2 innings.

Pagan earned the save in Sunday's 7-4 win over the Cardinals, allowing one hit while striking out three in a scoreless ninth inning.

After blowing back-to-back saves, Pagan has responded with four consecutive scoreless appearances (four innings), striking out six in that span. Pagan's converted 26 of 31 save chances this season while posting a 2.88 ERA, 0.92 WHIP and 66:20 K:BB across 56.1 innings.

The Phillies claimed Mayza (lat) off waivers from the Pirates on Sunday, Matt Gelb of The Athletic reports.

The left-hander has been sidelined since April due to a shoulder injury but has made four rehab appearances in the minors over the past couple weeks. Mayza may need another minor-league appearance or two with his new organization before coming off the injured list.