​KANSAS CITY, MO — Right fielder Corbin Carroll was scratched on Tuesday afternoon, Sept. 8, with low back discomfort, the second consecutive day he will be out of the Diamondbacks’ lineup.Carroll has been dealing with a back issue since the previous homestand last week.He did not start on Monday, Sept. 7, but entered the game as a pinch hitter.Ryne Nelson could be nearing return from ILRight-hander Ryne Nelson was scheduled to throw one inning and up to 25 pitches on Tuesday night, Sept. 8, in Triple-A Reno, after which he could find his way back from the injured list in a relief role.Nelson made his first rehab outing on Saturday, Sept. 5, for High-A Visalia, retiring all three batters he faced with two strikeouts.“He said he’s felt really good,” manager Torey Lovullo said. “The day after the Visalia outing felt good. Worked through the normal soreness in the normal spots. Anxious for today’s outing. But he’s in a good spot.”Nelson has spent the majority of his major league career as a starter. What little time he spent in the bullpen primarily has been in long relief.Once he returns, however, the Diamondbacks are expected to use him in shorter bursts.Nelson has been on the injured list since June with a right elbow strain.Roster moves add Corbin Burnes, Kade StrowdThe Diamondbacks on Tuesday, Sept. 8, added right-hander Corbin Burnes to the roster ahead of his season debut against the Royals. They also added right-hander Kade Strowd, giving them a fresh relief arm after the bullpen was used heavily the night before – and might be worked hard again depending on how deep Burnes is able to pitch.Burnes is expected to throw somewhere around 60-65 pitches against the Royals, though Lovullo did not specifically offer a number during his session with reporters.“There’s a very specific number we’re going to get very close to and not let him exceed,” Lovullo said. “He’s healthy and feels strong. Hopefully he can pitch into that fourth or fifth inning depending on what the overall number looks like. I know he’s very ready for this opportunity.”Lovullo added: “I’m really excited for Corbin. I know how hard he has worked.”Diamondbacks at Royals, 4:40 p.m., Cox, Ch. 34Diamondbacks RHP Corbin Burnes (3-2, 2.66)* vs. Royals RHP Michael Wacha (9-8, 3.36).* — Stats from 2025.At Kauffman Stadium: Burnes will be making his long-awaited return to the mound in what will be his first start in the majors since June 2025. … He signed a six-year, $210 million deal with the Diamondbacks in December 2024, then made 11 starts with his new team before going down with Tommy John surgery. … Burnes was perhaps a few weeks away from a return when a shoulder injury popped up during the summer, setting him back. … He logged three-plus innings in a rehab game against Angels minor leaguers last week. … Wacha gave up three runs in six innings against the Marlins in his most recent start. Prior to that, he struck out 10 in eight shu