Nelson is on Arizona's roster for its NLDS matchup against the Dodgers, Alex Weiner of ArizonaSports.com reports.

EDGE Analysis

Nelson was left off the D-backs' roster in favor of Bryce Jarvis ahead of the NL Wild Card Series against Milwaukee, and the two pitchers will swap places for the NLDS. Nelson gave up six runs over 3.2 innings across his final five appearances in the regular season, so the Diamondbacks will likely limit him to low-leverage outings.

Nelson is not on the Diamondbacks' roster for their NL Wild Card Series matchup versus the Brewers.

EDGE Analysis

Bryce Jarvis is essentially being carried instead as the Diamondbacks roll with 12 pitchers and 14 position players. Nelson surrendered 10 runs -- nine earned -- over his final 6.2 innings to close out the 2023 regular season.

Nelson is slated to serve as Arizona's opening pitcher for Sunday's season finale against Astros.

EDGE Analysis

The Diamondbacks clinched a playoff berth despite losing Saturday, so Arizona will presumably look to rest its key pitchers in the regular-season finale in advance of the postseason. It's unclear if manager Torey Lovullo plans to use a bulk reliever behind Nelson, or treat the contest as more of a bullpen day. Either way, Nelson is unlikely to work more than inning or two Sunday.

Nelson (5-3) was charged with the loss against the Dodgers on Wednesday. He allowed two runs on two hits and two walks and did not retire a batter.

EDGE Analysis

A tense pitching duel was decided when Nelson entered a scoreless game with two outs in the bottom of the eighth inning. He's typically been good when finishing off innings, but the left-hander allowed a double, an intentional walk, a walk and then a two-run single to former Diamondback David Peralta. Nelson has been a trusted bullpen piece for much of the season, but he's posted a 6.43 ERA over seven innings since returning from the All-Star break.

Nelson will serve as the Diamondbacks' opener Saturday versus the Pirates, Theo Mackie of The Arizona Republic reports.

EDGE Analysis

It'll be his first opener assignment of the year. Nelson has registered a strong 2.76 ERA with 42 strikeouts over 32.2 innings of relief this season with Arizona, but he'll probably only be asked to handle a frame or two Saturday against Pittsburgh and offers little fantasy appeal.

Nelson (4-1) retired all three batters faced, striking out one, and was credited with the win over the Pirates on Saturday.

EDGE Analysis

Nelson bridged the sixth and seventh innings for the Diamondbacks and benefitted from Pavin Smith's two-run home run to earn his fourth win of the season. The left-hander has pitched well in a middle-relief role for a second consecutive season. Nelson sports a 1.50 ERA over 18 innings (21 appearances) after pitching to a 2.19 ERA in 2022.

Nelson blew the save Tuesday against the Athletics. He allowed one run on one hit while striking out one over one-third of an inning.

EDGE Analysis

The Diamondbacks threw Nelson into a tough spot Tuesday, having the left-hander step in for Kevin Ginkel with the bases loaded and two outs. On his second pitch, Ryan Noda took Nelson yard for a game-tying grand slam, scoring Brent Rooker, Aledmys Diaz and Carlos Perez to bring the score to 8-8. Although Nelson was able to bounce back and get Ramon Laureano to go down swinging, the damage had already been done and the Athletics would eventually take the game in walk-off fashion in 12 innings.

Nelson allowed one hit and struck out two over one scoreless inning in Saturday's 5-3 loss to San Diego.

EDGE Analysis

Nelson was charged with a blown save, but he was presented with the challenge of getting out of starter Merrill Kelly's none-out, bases loaded jam in the sixth inning. After the first two batters he faced struck out, Ha-Seong Kim's single on a ball hit with a .170 XBA found its way to the outfield to plate two runs. Nelson has pitched well out of the bullpen and earned the high-leverage chance. Even when the left-hander was tagged with Thursday's loss, it was due to two unearned runs thanks to a Nick Ahmed error. Nelson has a 0.93 ERA and 1.24 WHIP with 15 strikeouts and three walks over 9.2 innings.

Nelson (2-0) allowed one hit while striking out three and walking none over 1.1 innings to earn the win Wednesday against Milwaukee.

EDGE Analysis

Nelson stranded a pair of runners to finish off the fifth inning and qualify for the win. He's been effective thus far this season, allowing one run over 5.2 innings (six appearances) while striking out nine. The lefty was slated to open the season in the minors, but a Joe Mantiply shoulder injury provided a stay from that fate. Since then, Cole Sulser (shoulder) and Mark Melancon (shoulder) have landed on the 60-day injured list, which means Nelson should remain in Arizona for the foreseeable future.

The Diamondbacks recalled Nelson from Triple-A Reno prior to Thursday's 8-2 loss to the Dodgers. He struck out two and worked around two hits in a scoreless inning.

EDGE Analysis

Nelson was in line to begin the season with Arizona's top affiliate, but Joe Mantiply's (shoulder) placement on the injured list resulted in the southpaw winning a spot in the Opening Day bullpen. The Diamondbacks are expected to deploy Nelson mainly in low-leverage or middle-innings spots while he's up with the big club.