The Marlins optioned Tarnok to Triple-A Jacksonville on Thursday.

Tarnok's latest stint in the majors lasted only one day, and he allowed two runs over 2.1 innings in a relief outing versus Atlanta. He's clearing out to make space on the roster for Adam Mazur, who is starting Thursday's contest against the Mets.

Beck threw a scoreless inning in Wednesday's 12-3 win over the Cubs, striking out two.

After allowing a run in each of his previous three appearances, Beck retired all three batters he faced and threw 10 of his 15 pitches for strikes. Over eight appearances in August, the right-hander has allowed eight earned runs on 12 hits -- including one home run -- and three walks while striking out 10 and hitting one batter in 13 innings. He owns a 4.82 ERA, 1.13 WHIP and 24:12 K:BB across 37.1 innings in 22 games this season.

Peguero threw two scoreless relief innings in Wednesday's 12-3 win over the Cubs, striking out three.

Peguero retired all six batters he faced, throwing 18 of his 25 pitches for strikes. The right-hander had his contract selected from Triple-A Sacramento last Thursday, when he made his big-league debut. The 28-year-old has tossed three scoreless outings since joining the Giants, allowing four hits and one walk while striking out four across 5.2 innings.

Thompson (shoulder) is scheduled to throw Friday after pitching a scoreless inning for Triple-A Reno on Tuesday, MLB.com reports.

The outing Tuesday was the first game appearance of a rehab assignment for Thompson. Following a live batting practice and a sim game, Tuesday's appearance was expected to be his final step before activation; however, the report indicates Friday's throwing session is the only confirmed next step in the process. The Diamondbacks may be waiting for September when rosters can be expanded be to 28 players (14 pitchers).

Mlodzinski didn't factor into the decision Wednesday against the Cardinals, allowing one run on three hits and three walks with four strikeouts across three innings.

Mlodzinski drew his 11th start of the season, though he threw just 46 pitches before handing the ball off to Bubba Chandler. Mlodzinski has been excellent in August, owning a 2.04 ERA and a 22:6 K:BB across 17.2 innings spanning seven appearances. Unless the Pirates look to give a starter an additional day of rest or move to a six-man rotation, Mlodzinski should move back to his typical relief role.

Chandler (1-0) picked up the win Wednesday against the Cardinals, allowing one hit and one walk with three strikeouts over four scoreless innings.

Chandler served as a long reliever for a second straight appearance, taking the mound to start the fourth inning and firing four scoreless frames. Chandler has now logged a save and a victory in his first two MLB appearances, and he's allowed no runs on three hits with six strikeouts across eight innings during that stretch. The highly touted prospect has looked as advertised through two appearances.

Santana picked up the save Wednesday against St. Louis, allowing one walk and no hits with one strikeout during a scoreless ninth inning.

Santana shut the door on the Cardinals to close out the Pirates' 2-1 win, walking Thomas Saggese with two outs before getting Pedro Pages to ground out. It was a bounce-back effort for Santana, who surrendered a run and took the loss Monday in St. Louis. That run is the only one he's allowed in his past eight innings of work. Santana has converted on 10 of his 12 save chances this season and has a 2.37 ERA and 0.91 WHIP.

Saalfrank picked up the save in Wednesday's 3-2 win over Milwaukee, allowing one hit and no walks in 1.2 scoreless innings. He struck out two.

Saalfrank turned in his fifth straight scoreless outing and threw a season-high 29 pitches. Kyle Backhus recorded two outs in the seventh inning for a hold, which does suggest Saalfrank is ahead of Backhus in Arizona's closer hierarchy. Ryan Thompson (shoulder) could also factor into the mix once he completes his rehab assignment, so this situation is perhaps in a state of flux. Saalfrank at least appears to be one of the favorites for saves, submitting a 1.35 ERA, 0.90 WHIP and 14:5 K:BB over his 20 innings.

Wentz (5-4) picked up the win Wednesday, allowing one run on four hits and two walks over 6.2 innings in a 12-1 rout of the Marlins. He struck out five.

Atlanta handed the southpaw a 9-0 lead through four innings, letting Wentz cruise to his third quality start in eight turns since joining the rotation coming out of the All-Star break. Over that stretch, the 27-year-old has delivered a 3.67 ERA, 1.18 WHIP and 33:15 K:BB through 41.2 innings. Wentz will look to keep rolling in his next outing, which lines up to come on the road early next week against the Cubs.

The Diamondbacks optioned Morillo to Triple-A Reno on Wednesday.

Morillo gave up a run on one hit and two walks without recording an out in Tuesday's loss to the Brewers. His latest appearance elevated his ERA to 4.55 to go with his 1.77 WHIP through 31.2 innings with the D-backs, and he'll now aim to get back on track in the minors. Taylor Rashi was promoted from Reno to take Morillo's place in Arizona's bullpen.