Diamondbacks Open To Moving Both Zac Gallen, Merrill Kelly

The Diamondbacks remain a sub-.500 baseball team with just days to go until the trade deadline. They’re ten games back of the Dodgers in the NL West and six games out of a playoff spot, leaving them with minimal hope of a miracle run back into postseason contention. As a result, they’ve turned their attention more fully towards selling with deals that shipped Josh Naylor to Seattle and Randal Grichuk to Kansas City in the past week. That sell-off only figures to get more substantial from here, and Ken Rosenthal of The Athletic suggested over the weekend that after initially resisting the idea of trading both Zac Gallen and Merrill Kelly in the coming days the pair could both be pitching for other teams in August if the club receives strong enough return packages for them.

As the team’s downward trajectory in the standings has continued, the value in keeping one of Gallen or Kelly around in the second half has diminished considerably due to the lack of a realistic path to the postseason. Still, either one would receive and reject a Qualifying Offer this winter if retained, allowing the Diamondbacks to recoup value in the form of draft pick compensation. Additionally, Rosenthal suggests that Arizona brass is concerned about the club’s pitching depth if it were to lose both Gallen and Kelly from the fold. Given that, the Diamondbacks would need to not only receive more than the value of the draft pick they could recoup over the winter to move their two starters, but also enough to make up for the additional strain on their rotation.

That the Diamondbacks would at least consider trading both Gallen and Kelly makes sense. After all, Fangraphs projects them for a meager 5.4% chance at the postseason entering today, and with a core of talent still in place to help bring the club back into contention for 2026 and beyond augmenting those years ought to be the club’s priority. It’s understandable, however, that Arizona is looking at its group of injured pitchers (including Corbin Burnes, A.J. Puk, and Justin Martinez) and the strain losing reliable arms like Gallen and Kelly would put on their remaining healthy arms with some trepidation. That’s why the club is already reportedly targeting young pitching this summer, and it stands to reason that if the Diamondbacks can land a big-league ready starting pitcher or two who can be reliably plugged into their rotation to eat innings down the stretch, that would go a long way to convincing them to part with their veteran rentals.

As noted by Nick Piecoro of the Arizona Republic, GM Mike Hazen acknowledged over the weekend that he was receiving “strong interest” in both of his rental starters. That’s hardly a shock, as both Kelly and Gallen have an argument as the best rental pitcher available. Kelly has pitched to a 3.22 ERA with solid peripherals this year that’s consistent with his status as a solid #2 starter, while Gallen is in the midst of a down season but has shown ace upside in the past with third-, fifth-, and ninth-place finishes in NL Cy Young voting over the years. Both pitchers offer solid enough track records of success in the postseason as well, something that other intriguing rentals like Dylan Cease and his 12.91 career ERA in the postseason cannot boast, though Kelly’s excellent 2.25 career ERA in the playoffs shines much brighter than the 4.54 figure of Gallen.

Interest in starting pitching in general is strong league wide this year, so it’s hardly a shock that Gallen and Kelly are no exception to that. The Blue Jays and Cubs are among the teams to have been directly connected to at least one of Kelly or Gallen at this point, but a number of other teams are known to be on the prowl for a starter. That includes the Yankees and Giants, both of whom appear to be prioritizing rotation help, although other clubs like the Padres, Tigers, Mets, Red Sox, and Astros all also expected to be at least somewhat involved in the rotation market. With so many teams looking for starters, it seems likely that the Diamondbacks will have plenty of intriguing offers for their pair of veteran hurlers that they can sort through in the coming days.