Nelson will have the final spot in the Diamondbacks' bullpen to begin the 2023 season, Nick Piecoro of the Arizona Republic reports.

EDGE Analysis

Joe Mantiply is headed for a season-opening stint on the 15-day IL because of shoulder fatigue, and Nelson will essentially fill the vacancy. The 26-year-old left-hander registered a strong 2.19 ERA and 1.08 WHIP over 37 innings for the Diamondbacks in 2022.

The Diamondbacks optioned Nelson to Triple-A Reno on Friday.

EDGE Analysis

Nelson had an outstanding season in 2022, logging a 2.19 ERA and 1.08 WHIP through 37 innings out of the bullpen. Unfortunately, he got hit around a bit more in the spring, giving up four earned runs over 8.2 frames. The 26-year-old southpaw will begin the season in Triple-A, but he figures to be one of the top choices to be called up should Arizona need more bullpen depth.

Nelson (elbow) will be ready for the start of spring training, Steve Gilbert of MLB.com reports.

EDGE Analysis

Nelson missed the final few weeks of the season while he was dealing with inflammation in his left shoulder. Prior to the injury, the 26-year-old was one of the most effective members of the Arizona bullpen, posting a 2.19 ERA and 1.08 WHIP over 37 innings from 43 appearances. Assuming he carries his health into the start of the regular season, Nelson should be a bridge in the middle innings to Mark Melancon or whoever wins the Diamondbacks' closing job.

Nelson was placed on the 15-day injured list Thursday with left elbow inflammation.

EDGE Analysis

The 26-year-old apparently suffered the injury Monday against the Dodgers, when he allowed three runs on a hit and a walk without recording an out. It's been a breakout campaign for Nelson with a 2.19 ERA, 1.08 WHIP and 30:14 K:BB over 37 innings this year, but the elbow injury could bring his season to an early end.

Nelson (2-1) picked up Monday's loss to the Dodgers, allowing three runs one hit, one walk and a hit batsman without retiring a batter.

EDGE Analysis

Nelson came in after starter Ryne Nelson flummoxed the Dodgers over six shutout innings. The reliever Nelson, who had four straight scoreless appearances since coming off the injured list Sept. 1, left with none out and bases loaded. The lefty reliever has a 2.19 ERA, 30 strikeouts, 14 walks and 11 holds through 37 innings.

Nelson hit a batter and retired three over a scoreless eighth inning to earn a hold in Sunday's 5-1 win over Milwaukee.

EDGE Analysis

After Zac Gallen's seven shutout innings, Nelson came on to protect a 3-0 lead, his first setup opportunity since being activated off the injured list. The left-hander walked three in his first outing off the IL, and this one didn't start any better when he hit Victor Caratini, but Nelson retired the next three batters to preserve the lead. Nelson will be part of the late-game crew, called to throw in setup or high-leverage situations. He's been a surprising find for the Diamondbacks, posting a 1.51 ERA (3.08 FIP) after pitching himself out of the Guardians' organization.

Nelson (2-0) allowed three walks and struck out one over a third of an inning to pick up the win over Milwaukee on Friday.

EDGE Analysis

Nelson couldn't find the plate, managing just six strikes among his 20 pitches, but he was the pitcher of record when Arizona took the lead. He entered a scoreless game with two outs and a runner on after 4.2 innings from starter Kyle Davies and walked three consecutive batters, allowing a run charged to the starter. This was Nelson's first game back from the injured list, so some leeway should be given. The left-hander has pitched well out of the Diamondbacks' bullpen (1.56 ERA) and had surrendered just eight walks over 34.1 innings (2.1 BB/9) prior to Friday's results.

Nelson (back) was reinstated from the 15-day injured list Thursday.

EDGE Analysis

Nelson has been out for the past month due to back spasms, but he'll rejoin the Diamondbacks on Thursday after making one rehab appearance with Triple-A Reno. The 26-year-old has eight holds with a 1.57 ERA, 0.90 WHIP and 27:8 K:BB across 34.1 innings this year and should re-enter the high-leverage mix now that he's healthy.

Nelson (back) threw in a game setting at Arizona's training facility and appears to be on the verge of returning from the injured list, Nick Piecoro of the Arizona Republic reports.

EDGE Analysis

The Diamondbacks will evaluate Nelson's response to the session Tuesday and get him back "as quickly as possible," per manager Torey Lovullo.

Nelson (back) began a rehab assignment Friday with Triple-A Reno and retired two batters while working around a hit and two walks in his first appearance.

EDGE Analysis

Nelson was placed on the 15-day injured list Aug. 2 with lower-back spasms and will likely require at least one more rehab appearance before being activated. Prior to being shelved with the back injury, Nelson posted a 1.57 ERA, 0.90 WHIP and 27:8 K:BB in 34.1 innings with Arizona while picking up one win and eight holds.