Robertson was left off the Phillies' NLDS roster due to a strained calf, Todd Zolecki of MLB.com reports.

EDGE Analysis

Robertson reportedly suffering the injury when jumping in the air to celebrate Bryce Harper's homer in Game 2 of the wild-card series against the Cardinals. He received a PRP injection, which could help him return for the NLCS, should the Phillies advance, but the team will be without one of its top bullpen weapons against Atlanta.

Robertson picked up the save Tuesday in Miami, retiring the side in order in the ninth inning of a 2-1 win.

EDGE Analysis

Robertson made quick work of the heart of Miami's lineup, getting a flyout and two groundouts to end the game. It was his 20th save of the season and sixth since joining the Phillies. He's recorded saves in consecutive games but Philadelphia will likely continue to spread the save chances around its corps of relievers down the stretch.

Robertson struck out the side in a perfect inning to earn a save over the Phillies on Sunday.

EDGE Analysis

After blowing a save in his last outing, Robertson bounced back with a dominant performance Sunday. He lowered his season ERA to 2.38 with a 75:28 K:BB while converting 19 of his 26 save chances. Seranthony Dominguez (triceps) returned from the injured list Sunday and pitched the eighth inning.

Robertson (4-3) blew the save and took the loss Thursday against the Marlins. He allowed two runs on two hits and one walk while striking out three over one inning.

EDGE Analysis

Robertson surrendered the go-ahead run on an RBI single from Brian Anderson with nobody out in the ninth after the tying run scored on a fielding error. The righty has struggled in his last seven appearances, blowing two saves in three opportunities and turning in a 1-3 record with a 6.14 ERA during that span. The 37-year-old is the top choice at closer while Seranthony Dominguez is on the 15-day IL (triceps).

Robertson (4-2) picked up the win Tuesday, giving up a hit and two walks while striking out one in a scoreless ninth inning during a 3-2 victory over the Marlins.

EDGE Analysis

A caught stealing on Luke Williams helped Robertson escape a jam in the top of the ninth, and he then got the decision when Jean Segura slapped a walkoff single in the bottom of the frame. Robertson hasn't recorded a save since Aug. 24, but he sports a 2.51 ERA, 1.33 WHIP and 18:8 K:BB through 14.1 innings since joining the Phillies at the trade deadline.

Robertson (3-2) took the loss Sunday versus the Giants, allowing two runs on three hits and two walks while striking out four in 1.2 innings.

EDGE Analysis

Robertson did his job in the eighth inning to keep the score tied at 3-3, but Wilmer Flores connected on a two-run walkoff home run in the ninth. This was just the second time in 12 appearances for Philadelphia that Robertson's allowed runs, and both of those instances have been two-run mishaps leading to losses. He's added four saves and three holds as part of the Phillies' closer committee. When accounting for his time with the Cubs to begin the year, he has a 2.35 ERA, 1.08 WHIP and 68:25 K:BB through 53.2 innings while going 18-for-24 in save chances.

Robertson picked up the save Wednesday against Cincinnati, allowing one walk while striking out one over one inning.

EDGE Analysis

Robertson has been great since being dealt to Philadelphia, sporting a 1.83 ERA and 1.03 WHIP over 9.2 innings in nine outings. The righty has allowed zero runs in eight of those nine outings and has recorded the save in four of his last five opportunities. The 37-year-old's only blemish in his time with the Phillies was a blown save against the Mets in which he allowed two runs in 0.2 innings.

Robertson (3-1) allowed two runs on two hits while taking a loss against the Mets on Sunday. He struck out two and was charged with a blown save.

EDGE Analysis

It was announced that Robertson wouldn't be Philadelphia's lone closer while Seranthony Dominguez (triceps) is on the injured list and he didn't improve his stock with Sunday's outing. The 37-year-old righty served up a two-run homer to Mark Canha and was charged with his sixth blown save of the year. Robertson's ERA jumped from 1.86 to 2.20 through 44 appearances on the year. It's worth noting that Brad Hand and Jose Alvarado each threw a scoreless inning Sunday while Connor Brogdon was tagged with three runs in the seventh frame.

Robertson will not be the sole closer even after Seranthony Dominguez (triceps) was placed on the injured list Sunday, Alex Coffey of The Philadelphia Inquirer reports.

EDGE Analysis

Manager Rob Thomson told reporters that he would continue to mix and match the closer role and named Connor Brogdon, Brad Hand, Jose Alvarado and Andrew Bellatti as pitchers who could potentially see save opportunities. Robertson may get the first chance, as he recorded a two-inning save in the second game of Saturday's doubleheader against the Mets. He's seemingly earned the opportunity, as he has turned in seven scoreless appearances -- spanning eight innings -- since joining the Phillies at the trade deadline.

Robertson walked two and allowed a hit while striking out two across two innings to earn the save in the second game of Saturday's doubleheader against the Mets.

EDGE Analysis

Robertson entered the game to start the eighth inning and threw 36 pitches to record his 17th save of the season. Seranthony Dominguez (triceps) was unavailable, and if he remains sidelined, Robertson should see a much larger share of the save opportunities. Robertson has yet to surrender a run across eight innings since joining the Phillies at the trade deadline, picking up three saves and two holds with his new team.