RSS Diamondbacks Team Notes

D-backs righty Merrill Kelly has been slowed by back discomfort in recent days and has undergone multiple waves of testing to get to the root of the issue. It seems the Snakes still haven’t determined the exact problem, but Kelly tells the team’s beat that he’s not expecting to be ready to take the mound on Opening Day (link via Nick Piecoro of the Arizona Republic). Tests thus far have fortunately not revealed any major issues in his back, but doctors are still working to ascertain what’s hobbling him. Piecoro adds that Kelly played catch today but still felt pain in his back while doing so.

If the D-backs feel Kelly only needs to be pushed back a few days or skip one start, it’s possible he could avoid a trip to the 15-day IL, but obviously today’s comments firmly put an IL stint on the table as a possibility. If he heads to the injured list to begin the season, Arizona will open the year with Zac Gallen, Ryne Nelson, Eduardo Rodriguez, Brandon Pfaadt and Michael Soroka in the rotation. One would imagine Gallen’s standing with the team would make him the Opening Day favorite, even on the heels of a down season, though that much will be determined as camp plays out.

Kelly, 37, spent six and a half seasons in the Diamondbacks’ rotation from 2019-25 but was traded to the Rangers at last summer’s deadline. Asked about his time with the D-backs following that trade, Kelly said he’d be open to a return in free agency after calling Phoenix home for so long and setting down some roots there. Though he didn’t perform as well as hoped in his two months with Texas, he still finished out the season with a sharp 3.52 ERA in 184 innings, fanning a roughly average 22.3% of his opponents against a strong 6.4% walk rate.

The Diamondbacks entered the offseason looking to scale back payroll but still managed to find common ground with Kelly, making a two-year offer worth $40MM that sold the righty on heading back to the desert. The D-backs are effectively trotting out the same rotation that struggled last year — plus an affordable one-year flier on the talented but injury-prone Soroka — so they’ll be counting on Pfaadt, Rodriguez and especially Gallen (who als0 re-signed as a free agent) to bounce back after rough showings.

It’s clearly not ideal for the team’s steadiest starter to already be dealing with an injury in camp — even if it proves minor — though the Snakes should have better rotation depth this year. Part of that is due to the very trade that shipped Kelly out of town. The Rangers sent pitching prospects Kohl Drake, Mitch Bratt and David Hagaman to Arizona to rent Kelly for the remainder of the ’25 season. Drake and Bratt are now both on the team’s 40-man roster and could make their big league debuts this season as they look to stake their claim to a long-term rotation spot.

Other depth options in camp include prospects Yilber Diaz and Cristian Mena, both of whom have made brief MLB debuts but struggled through down showings in 2025. Righty Dylan Ray was also selected to the 40-man roster this past offseason, and veterans Joe Ross and Thomas Hatch are in camp as non-roster invitees as well.
 
The Diamondbacks rotation is an early focus in camp. Right-hander Merrill Kelly was slated to be the Opening Day starter but a back issue has scuttled those plans, even though an exact diagnosis has proved elusive. Manager Torey Lovullo tells Nick Piecoro of the Arizona Republic that Kelly still has enough time to be stretched out for Arizona’s second series of the season.

The Snakes begin their season on March 26th with three games in Los Angeles against the Dodgers. They then have an off-day before starting a seven-game homestand with Detroit coming to town for three and Atlanta for four. Though Kelly won’t take the ball for Opening Day, it would be nice to get him in there at some point fairly early in the schedule.

That will presumably be contingent on his body cooperating. He has been subject to a number of recent tests, including an MRI and a CT scan, without anything conclusive being discovered. While it’s encouraging that the tests keep coming back negative, Kelly has still been experiencing pain while throwing.

Time will tell how things play out with Kelly. If he does eventually require some time on the injured list, then the rotation jobs should go to Zac Gallen, Eduardo Rodríguez, Brandon Pfaadt, Ryne Nelson and Michael Soroka. Pfaadt is also under the microscope somewhat, as Piecoro relays that he had some kind of issue with his side during the offseason. He appears to be fine now but the club is slow-playing his progression a bit.

Beyond that group, the depth is lacking in experience. Cristian Mena, Yilber Díaz, Kohl Drake, Mitch Bratt and Dylan Ray are on the 40-man roster. The latter three haven’t yet cracked the majors. Díaz has just 31 1/3 innings while Mena has only 9 2/3.

Mena is also unlikely to be available anytime soon. He didn’t pitch after June last year due to a strain of the teres major in his throwing shoulder. Per Piecoro, Mena has re-aggravated that teres major injury recently. His timetable isn’t exactly clear but he has been shut down from throwing for the time being.

If everything goes well, Soroka could end up in a long relief/swingman role, ready to jump into the rotation as soon as someone gets hurt as Kelly, Gallen, Rodríguez, Pfaadt and Nelson make starts. But Kelly’s status is up in the air and Pfaadt is being monitored closely. The depth was already on the light side and now Mena has been subtracted from it, at least for now. Non-roster guys with big league experience include Joe Ross, Thomas Hatch and Bryce Jarvis.

If the Snakes want to add to the group, there are still starting pitching free agents available. Lucas Giolito and Zack Littell are the two most notable ones but Patrick Corbin, Tyler Anderson and a few others are also out there. The club may be reluctant to add more money to the ledger, however, as they already stretched beyond their plans when grabbing Gallen a couple of weeks ago.

Photo courtesy of Rob Schumacher, Imagn Images
 
The Diamondbacks have already had to deal with an unwelcome number of injury scares to key players, though Sunday’s news brought some optimism that Merrill Kelly and Corbin Carroll could both still be a part of the Opening Day roster.

Right at the very start of Spring Training, Carroll underwent surgery to fix a broken hamate bone in his right hand, putting him out of action for roughly 4-to-8 weeks (the usual timeline following such procedures). Last weekend, Kelly was scratched from throwing a live batting practice session due to some back soreness, and the discomfort persisted even though both an MRI and CT scan came back clean. Officially, the diagnosis is intercostal nerve irritation, according to the D’Backs.

It was enough for Kelly to tell the media last Wednesday that he was likely going to be starting the season on the 15-day injured list, though his outlook was different today. Kelly told MLB.com’s Steve Gilbert and other reporters that he received an injection of cortisone and lidocaine earlier this week, and had a pain-free session of catch today. While Kelly won’t act as the Diamondbacks’ Opening Day starter on March 26, the aim is for Kelly to now pitch at the back of Arizona’s rotation, which would line the righty up for his season debut during the team’s second series of the year.

The D’Backs begin the 2026 campaign with three games in Los Angeles against the Dodgers, and then after an off-day, return home for a seven-game homestand against the Tigers and Braves. Given the March 29 off-day, the Snakes could technically delay Kelly’s first start beyond the first five games, though that would leave the club essentially playing a man short until Kelly is ready to take the mound.

With more than three weeks to go until Opening Day, there is still time for Kelly to restart his throwing progression and get fully ready to go, assuming his good health persists. Even if Kelly is only built up to throw something like 50-60 pitches, the D’Backs could use a piggyback starter or lean on the bullpen during the veteran’s first start. On the flip side, Arizona could also simply place Kelly on the IL to give him extra time to heal up, and make sure he is ready to hit the ground running once he takes the mound.

As for Carroll, it has been a little under three weeks since his February 11 surgery, but he described his progress as “definitely ahead of schedule.” The outfielder told Gilbert and other reporters that he started catching fly balls (Carroll’s right hand is his glove hand) today, and he has started to hit with both hands on the bat.

“It’s very low intensity, like flips and tee [work]….I think some other guys that have gone through a hamate injury were happy to see where I am [given] how far I am out of surgery,” Carroll said.

Manager Torey Lovullo described Carroll’s process as “right up to that line of doing too much. He’s pushing as hard as he can and as far as he can, and we love that. So we’ll continue to get updates from [hand surgeon] Don Sheridan and our medical team about what the next steps are, but yeah, he’s doing really, really well.”

Being able to hit and catch normally without any discomfort is only part of Carroll’s path to recovery, as he’ll then have to try and make up for time lost during Spring Training. Carroll has been taking part in other baseball activities, so he won’t be starting from square one once he is fully cleared. It then becomes a question of how many Cactus League games Carroll may be able to play in before March 26, and how many he’ll need before he feels properly ramped up for the regular season.
 
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