Duran worked a scoreless frame, allowing two hits and no walks, to collect the save in Monday's 1-0 win against the Mets. He struck out two.

The flamethrowing righty escaped from a jam in which runners were on second and third with one out, fanning the final two batters he faced. Despite almost blowing this save, Duran has been one of the best relievers in the league since joining Philadelphia at the trade deadline, pitching to a 1.32 ERA, 0.88 WHIP and 17:0 K:BB in 13.2 innings. Overall, the 27-year-old sports a 1.86 ERA, 1.11 WHIP and 70:18 K:BB across 63 total frames with the Phillies and Twins.

Wantz (elbow) threw a scoreless inning and struck out one during Saturday's game against Triple-A Gwinnett.

Wantz was officially activated from the 60-day injured list Sept. 1 after recovering from right elbow surgery. He's looked sharp in three appearances since his return to Triple-A, firing three scoreless frames while registering two strikeouts and one walk.

Martinez (undisclosed) was released by Baltimore on Sept. 4.

Martinez appeared in 16 games at Triple-A Norfolk this season, recording a 4.96 ERA and 1.99 WHIP with 21 strikeouts across 16.1 innings. He missed a good chunk of the season while on the mend from an undisclosed injury and hadn't yet returned from a rehab assignment before being handed his release.

Stewart (shoulder) threw a bullpen session Saturday and could face live hitters this week, Sonja Chen of MLB.com reports.

Stewart has been sidelined since Aug. 12 while dealing with right shoulder inflammation, and he has now taken a significant step in his recovery. The right-hander is hopeful that one rehab outing would be enough, and he said Monday that he has felt good since his second cortisone shot in late August.

Vesia (oblique) expects to be activated from the 15-day injured list before Tuesday's game against the Rockies, David Vassegh of AM 570 LA Sports reports.

Vesia hasn't appeared in a big-league game since Aug. 21 while on the mend from a right oblique strain, but all has gone well while on a rehab assignment. He should immediately slot back in as a high-leverage arm for the Dodgers upon his return from the shelf.

The Cubs recalled Roberts from Triple-A Iowa on Monday.

Roberts will rejoin the Cubs and provide a fresh arm in the bullpen after Daniel Palencia (shoulder) was placed on the 15-day injured list in a corresponding move. Over 10 appearances with the big club this season, Roberts has posted a 6.00 ERA and 1.33 WHIP across nine innings.

Ortega (elbow) struck out one batter and surrendered two earned runs on one hit and two walks over one inning in his season debut for Triple-A Syracuse on Sunday after being reinstated from the 7-day injured list.

After requiring surgery last summer to remove a bone spur from his right elbow, Ortega signed a minor-league deal with the Mets over the winter but had remained on the shelf all season while completing his recovery from the procedure. He finally made his debut for the Triple-A club Sunday, which came after he completed an eight-appearance rehab assignment with Single-A St. Lucie. Ortega will look to finish the season on a high note with the hope of securing a minor-league deal with the Mets or another organization during the upcoming offseason.

Keller appears to be the likeliest candidate to take over as the Cubs' closer after Daniel Palencia (shoulder) was placed on the 15-day injured list Monday, Bruce Levine of 670TheScore.com reports.

Palencia's availability for the remainder of the season is in jeopardy while he recovers from a right shoulder strain. Keller has been a revelation out of the Cubs bullpen this season and has yet to permit a run over 20 second-half appearances, yielding a total of just three hits over that stretch. If manager Craig Counsell prefers to take a committee approach at closer while Palencia is out, Andrew Kittredge and Caleb Thielbar could also be in the mix for saves along with Keller.

Fedde gathered a hold while giving up a double and retiring the other two batters he faced during a relief appearance in Saturday's 4-1 win over the Pirates.

Fedde made his second appearance as a member of the Brewers, this time working out of the bullpen after he had previously made a 4.1-inning start versus the Diamondbacks in his team debut Aug. 27. Since he tossed just 10 pitches Saturday, Fedde could be in consideration to make a spot start in Texas on Tuesday, when the Brewers will have a temporary opening in the rotation. However, Curt Hogg of the Milwaukee Journal Sentinel notes that Chad Patrick has joined the Brewers in Texas, so he could be formally recalled from Triple-A Nashville to draw the start over Fedde on Tuesday.

The Marlins optioned Roa to Triple-A Jacksonville on Monday.

Roa was with the big club for just a couple days, tossing two scoreless innings in his lone appearance. He's clearing out to make room on the active roster for Janson Junk (elbow), who is back from the 15-day injured list to start Monday's game versus the Nationals.