Nelson cleared waivers Wednesday and was outrighted to Triple-A Reno, Alex Weiner of ArizonaSports.com reports.

EDGE Analysis

Nelson appeared in just three games for the D-backs in 2025, giving up two earned runs over two innings. He didn't find much success in the minor leagues either, posting an 8.83 ERA and 1.64 WHIP across 34.2 frames. His poor performance will now cost him his roster spot as the offseason begins, and it's unknown whether he will exercise his right to elect free agency.

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

EDGE Analysis

After giving up two runs in two-plus innings and collecting his first big-league save during his brief MLB stint, Nelson will return to the minors in favor of Casey Kelly. Nelson owns a 6.08 ERA through 23.2 innings in the minors, though the amount of injuries in Arizona's bullpen keeps the door open for him to return to Arizona before the end of the year.

Nelson picked up the save Sunday against the Athletics, allowing one run on one hit while striking out one in the ninth inning.

EDGE Analysis

Nelson was a surprise choice to close things out, but with Kevin Ginkel unavailable after throwing 20 pitches Saturday, the Diamondbacks turned to the 29-year-old lefty to finish off the win. His lone blemish was a solo shot off the bat of JJ Bleday, but he otherwise preserved the lead to notch the first save of his career in his 133rd MLB relief outing. Kendall Graveman, who handled the eighth inning against the heart of Oakland's lineup, may remain the top setup option behind Ginkel, but Nelson's usage hints at Arizona's willingness to mix and match in the late innings when needed.

The Diamondbacks selected Nelson's contract from Triple-A Reno on Friday.

EDGE Analysis

The left-hander was designated for assignment in early July but will receive another look in the majors coming off Thursday's trade deadline. Nelson has made 11 appearances for Arizona this season and has a 4.22 ERA, 1.13 WHIP and 8:4 K:BB across 10.2 innings.

The Diamondbacks outrighted Nelson to Triple-A Reno on Sunday.

EDGE Analysis

He's no longer on the 40-man roster, but Nelson will remain in the organization after passing through waivers unclaimed. The left reliever hasn't pitched well at Reno this season after coming back from thoracic outlet surgery, allowing 16 runs with a 12:8 K:BB over 17 innings.

The Diamondbacks designated Nelson for assignment Wednesday.

EDGE Analysis

The D-backs needed to make room on the 40-man roster after signing Jake Woodford to a big-league deal Wednesday, and Nelson will end up as the odd man out. The 28-year-old has struggled in the minors this year, giving up 16 earned runs in just 18 innings at Triple-A Reno while striking out 12 batters and walking eight.

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

EDGE Analysis

Nelson is healthy again after missing most of the 2024 season while recovering from thoracic outlet syndrome surgery, but he had struggled with his command and control this spring, giving up nine runs (eight earned) on nine hits -- including three home runs -- and four walks over 5.2 innings in Cactus League play. He'll look to shake off the rust in Reno and put himself in consideration for a call-up later on this season.

Nelson (shoulder) retired two batters and was charged with two earned runs on three hits while striking out one in Tuesday's 4-2 Cactus League loss to the Cubs.

EDGE Analysis

Making his spring debut after he had been sidelined since last April while he recovered from thoracic outlet syndrome surgery, Nelson perhaps unsurprisingly struggled with his command. He served up home runs to two of the five batters he faced and was charged with a blown save after giving up a 2-0 lead in the fifth inning. The southpaw possesses a spot on the Diamondbacks' 40-man roster, but since he has two minor-league options remaining, he could open the season at Triple-A Reno if the organization determines he needs more time to knock off some rust coming out of the spring.

The Diamondbacks and Nelson (shoulder) avoided arbitration by agreeing to a one-year, $825,000 contract Thursday, Robert Murray of FanSided.com reports.

EDGE Analysis

Nelson had been eligible for arbitration for the first time. The left-hander missed most of the 2024 season after undergoing thoracic outlet surgery in May, and while he should have a shot to be ready for the start of the 2025 campaign, it's a notoriously tricky operation to come back from.

Nelson (shoulder) underwent thoracic outlet surgery Monday, Steve Gilbert of MLB.com reports.

EDGE Analysis

Nelson is expected is expected to miss the rest of the season.