Nelson (1-1) was handed his first loss of the season Tuesday against the Royals, allowing four runs on 11 hits while striking out three over five innings.

EDGE Analysis

Nelson gave up a season-high 11 hits but was able to keep the ball in the yard after allowing at least one home run in three of his past four starts. The Royals got on the board in the first, fourth and fifth innings with RBI singles and scored their fourth run against Nelson on a sacrifice fly. A positive for the 25-year-old is that he didn't issue a walk after he exhibited command issues his last time on the mound. Nelson has yet to show great consistency in the early going and will carry a 5.33 ERA, 1.37 WHIP and a 17:8 K:BB over 27 innings into his next start.

Nelson did not factor into the decision Thursday, allowing five runs on three hits and three walks over five innings against the Padres. He struck out four.

EDGE Analysis

Nelson's five runs allowed were the most he's given up across his four starts this year. The right-hander is tentatively slated to face the Royals at home in his next appearance.

Nelson did not factor into the decision Saturday, allowing one run on five hits and zero walks over six innings against the Marlins. He struck out four.

EDGE Analysis

Nelson pitched a gem, showing why Arizona picked him in the second round of the 2019 draft. The 25-year-old showed the command of a seasoned veteran, as this was the first start of his career in which he did not allow a walk. The Nevada native's next assignment will be a major test, as he'll be facing the star-studded Padres lineup at home in a few days.

Nelson (1-0) earned the win Sunday against the Dodgers after he allowed three runs on four hits with three strikeouts and two walks across six innings.

EDGE Analysis

Nelson generated just seven swinging strikes but did enough to limit Los Angeles and secure his first win of the season. The 25-year-old has faced the Dodgers and Padres in his first two starts of 2023, and he fared well enough with three runs given up in each outing. The right-hander tentatively lines up for a more favorable matchup versus the Marlins next weekend.

Nelson did not factor into the decision Monday, allowing three runs on six hits and three walks over five innings in a 5-4 loss against San Diego. He struck out three.

EDGE Analysis

Nelson gave up a two-run homer to Juan Soto in the first and an RBI single to Manny Machado in the second, but he settled down after that and finished with three scoreless frames. The 2019 second-round pick made his MLB debut late last year, posting a 1.47 ERA and 0.82 WHIP with a 16:6 K:BB across three starts (18.1 innings), but he figures to face a little adversity in his first full campaign. Given the opponent, Nelson's 2023 debut was solid, but it doesn't get much easier for the rookie, who's scheduled to pitch again Sunday versus the Dodgers.

Nelson allowed one run on four hits while striking out five over 5.2 innings in Tuesday's spring start against Cleveland.

EDGE Analysis

Nelson made steady improvement over the course of the spring, which eventually earned him the No. 5 starter job over Drey Jameson, Tommy Henry and Brandon Pfaadt. The right-hander is ticketed to make his first regular-season start Monday, April 3, on the road against the Padres.

Nelson was named the Diamondbacks' No. 5 starter Sunday, Nick Piecoro of The Arizona Republic reports.

EDGE Analysis

The 25-year-old surrendered 12 runs with a 13:8 K:BB across 14.1 innings during spring training but still won the rotation spot over Drey Jameson. Nelson was impressive in his first taste of the big leagues last season with a 1.47 ERA, 0.82 WHIP in 18.1 frames and clearly has upside, but he could be a risky bet for fantasy managers requiring immediate production.

Nelson allowed three runs on four hits and two walks while striking out three over 4.2 innings in Thursday's split-squad start against the Cubs.

EDGE Analysis

Nelson set down the side in three of his four full innings before the Cubs knocked him around in the fifth, prompting his departure. It was an interesting day for those monitoring the battle for the No. 5 starter job in the Diamondbacks' rotation. Nelson's competition, Drey Jameson, was working the other split-squad game and he posted similar numbers. It looks like one more outing for each will be needed before manager Torey Lovullo makes a decision.

Nelson allowed one run on four hits and one walk while striking out six over 4.1 innings in Friday's spring start against Colorado.

EDGE Analysis

The battle for the final rotation spot is heating up late in camp. Prospect Brandon Pfaadt has been the most consistent throughout, but he would have to be added to the 40-man roster which could sway the decision toward Nelson. His spring got off to a rocky start, but the right-hander cobbled together a couple of strong outings the past week. The competition has evolved since the start of camp with Drey Jameson and Tommy Henry each topping the group on iterations of the projected roster from MLB.com's Steve Gilbert, but it's now looking more like Nelson or Pfaadt.

Nelson allowed one run on four hits and one walk while striking out two over 2.2 relief innings during Sunday's spring game against Colorado.

EDGE Analysis

It was a day for the two leading candidates for the No. 5 starter job. Drey Jameson started for the Diamondbacks, giving up five runs over three-plus innings, while Nelson threw multiple relief innings. Statistically, Jameson has produced better Cactus League results, but Nelson is trending upward, including a promising stint in a "B" game that doesn't count toward his spring statistics. Others in the hunt for the same role are Tommy Henry and Brandon Pfaadt.