Top of the Order: Jordan Montgomery’s Option Transforms Arizona’s Offseason

Welcome back to Top of the Order, where every Tuesday and Friday I’ll be starting your baseball day with some news, notes, and thoughts about the game we love.

Jordan Montgomery has been bad in his first season with the Diamondbacks. A 6.44 ERA is bad, a 5.23 xERA is bad, a 15.5% strikeout rate is bad, a .377 wOBA allowed is bad. We all know these things. (Dad, if you’re reading this, and I know you are: You now know these things. All those stats are bad.) So I’m not going to spend too much time belaboring that point. But Montgomery’s badness has cascading effects beyond just how long to stick with him in the rotation or if he’ll even be on the playoff roster the Diamondbacks almost certainly will be constructing.

Montgomery agreed to a deal with the Diamondbacks just before Opening Day for a contract paying him a guaranteed $25 million this year, and it crucially came with a vesting player option for Montgomery, as negotiated by his agent at the time, Scott Boras. (Montgomery has since left Boras for Joel Wolfe and Nick Chanock at Wasserman.) If Montgomery had made fewer than 10 starts this year, he simply would’ve become a free agent after the World Series; this was meant to limit Arizona’s risk if Montgomery sustained a long-term injury while ramping up after his late signing.

But what it didn’t protect the Diamondbacks from was ineffectiveness, and Montgomery’s 2025 is now in his hands. The option value began at $20 million, when Montgomery made his 10th start, and then went up to $22.5 million upon his 18th start. It will reach its maximum value of $25 million with four more starts. Since Montgomery is very much in the “he would probably have to take a one-year pillow contract” territory, I’d be absolutely shocked if he didn’t take the $25 million payday. The best he can hope for now is that next year, after getting a normal offseason and a full spring training, he pitches more like he did when he dominated during the 2023 postseason, so that his value rebounds when he becomes free agent again after the 2025 season.

The downstream effects on any team’s payroll would be notable — $25 million is a lot! — but especially so for the Diamondbacks. The Snakes currently have $171 million committed to this season, their highest payroll ever, and $63 million committed to next year. If Montgomery makes four more starts and elects to stay with the team, next year’s figure would jump to $88 million. On the surface, you’d think that would give Arizona a ton of room to build a team just as good as this one, but the payroll can increase very sharply, very quickly.

That $63 million number is only what’s actually committed to players as of this second, mainly the guaranteed money to Eduardo Rodriguez, Ketel Marte, Lourdes Gurriel Jr., and Corbin Carroll. Also included are the presumed buyouts of the mutual options (which are virtually never exercised) for Joc Pederson, Randal Grichuk, and Scott McGough. That $63 million also includes the combined $3 million in buyouts that the D-backs would need to pay if they don’t pick up their club options on Eugenio Suárez and Merrill Kelly. Suárez’s option could go either way, so for now we’ll just assume that it’s declined, but Kelly’s seems like a no-brainer to get picked up for just $7 million. Working off of that (adding the $7 million and subtracting the $1 million buyout they won’t have to pay him), we’re now at $69 million, or $94 million with Montgomery. That figure would be about 55% of this year’s franchise-record payroll for just six players.

Onto the arbitration-eligible players: Zac Gallen, A.J. Puk, Ryan Thompson, Kevin Ginkel, and Joe Mantiply have gone through arbitration before and should all stick around; they’re making about $14.3 million combined this year. If we conservatively assume that in the aggregate they get raises of 25%, that’s another $18 million or so added to next year’s payroll, for a total of $112 million. Throw in $3 million combined for the guys who’ll be in their first year of arbitration — Alek Thomas and Geraldo Perdomo — and we’re all the way up to two-thirds of this year’s payroll. Pre-arbitration players should account for, at absolute minimum, another $10 million or so, and boom, that brings the figure up to $125 million, 70% of where it’s at this season.

All of that would leave the D-backs plenty of room to build another really good team if they didn’t have any significant free agents to replace, but of course, they almost certainly will. Pederson has been quietly elite as a platoon DH; despite playing exactly zero games in the field and facing lefties only 30 times, he’s compiled 3.1 WAR because he’s just so darn good at mashing righties. Christian Walker, currently on the IL with an oblique strain, is set to hit free agency entering his age-34 season, so he’s not in line for a huge deal, but he’d still probably reject Arizona’s qualifying offer and look for a longer contract.

Perhaps 7th-ranked prospect Jordan Lawlar is able to factor into the infield, making Suárez’s possible departure easier to swallow, but there’s no heir apparent to Walker at first or Pederson at DH. The D-backs traded away their offense-first prospects Andrés Chaparro and Deyvison De Los Santos, and Tommy Troy — their other top-100 prospect — is struggling in High-A and years away from the majors. Perhaps Gurriel Jr. spends more time at DH next season to keep him fresh, with a speedy outfield of Carroll, Thomas, and Jake McCarthy, though without Pederson and Walker, that certainly makes for a worse offense. Signing at least one starting-caliber player would cost (again, conservatively) at least $12 million, which would bring them to 80% of this season’s payroll.

Again, all of these estimates are conservative, and I’m including only the bare minimum investment that the Diamondbacks would have to make to continue to have a competitive, complete roster. All of this to say: They may have to get creative. With Montgomery and Kelly both expected to be around next season, Arizona will have six starters (Montgomery, Kelly, Rodriguez, Gallen, Ryne Nelson, and Brandon Pfaadt) for five rotation spots. The D-backs could trade from that surplus to fill a position of need, just as they did a couple offseasons ago when they dealt Daulton Varsho for Gabriel Moreno and Gurriel Jr.

Teams would line up for Pfaadt, Nelson quietly has been worth a solid 2.0 WAR, and even if he hasn’t pitched like an ace for over a year now, Gallen still has notable trade value as he enters his final year before free agency. I’m not saying the Diamondbacks definitely will trade a starter, but it’s something they should consider. The Orioles, for example, are rich in young position players and have just three rotation spots (Grayson Rodriguez, Dean Kremer, and Trevor Rogers) locked in for next year.

Of course, if Montgomery bounces back next season, Arizona won’t regret paying him $25 million, but unless ownership decides to increase payroll, things are going to be tight. The primary focus for the Diamondbacks right now is on defending their National League title, but regardless of how long they last during their probable return to the postseason, tough decisions may be awaiting them on the other side of October.