Geraldo Perdomo's .671 OPS in 2026 is a steep fall from his franchise-record 2025

Geraldo Perdomo, the Arizona Diamondbacks' franchise shortstop, is having a 2026 that looks nothing like 2025 — and the gap between those two seasons is wide enough to park a bus in, per Yahoo Sports.

What happened

Per Yahoo Sports, Perdomo is posting a .671 OPS this season, a figure that puts him on pace for his worst full-season OPS since 2022, when he hit .195. The decline is notable not just in isolation but against the backdrop of what he produced a year ago: a seven-WAR campaign, 100 RBI — a franchise record — and a fourth-place finish in MVP voting. That version of Perdomo was one of the best shortstops in the National League. The 2026 version, per the report, has 20 RBI through the same stretch of the season.

Yahoo Sports notes that Perdomo has hit primarily in the three-hole this season, a lineup position that carries implicit run-production expectations. A total of 20 RBI from the three spot is a long way from the 100 that made him a franchise landmark in 2025.

Why it matters

The operational weight of this is real. Perdomo is not a depth piece or a platoon option — he is the franchise shortstop, the player Arizona built around when they decided what kind of team they wanted to be. A seven-WAR season earns that designation. A .671 OPS complicates it.

The Diamondbacks are not in a position where they can absorb a prolonged slump from a cornerstone player without consequence. The lineup construction around the three-hole assumes a certain level of production from whoever occupies it. When that production does not arrive, the downstream effects ripple through the run-scoring environment in ways that are difficult to paper over with roster shuffling alone.

Yahoo Sports frames this as a genuine problem — not a cold stretch, not a slow April that corrected itself, but a sustained pattern worth examining. The piece raises the question of which parts of Perdomo's game have remained positive, suggesting the answer is not entirely bleak, though the OPS figure is the headline.

The numbers

The figures Yahoo Sports reported anchor the season: a .671 OPS in 2026, against a 2025 campaign that produced 7 WAR, 100 RBI, and a fourth-place MVP finish. The 20 RBI total this season, per the report, is the production line attached to a player hitting in the three-hole.

The Arizona Diamondbacks as a club sit at 86-76 (.531) on the season.

Where the club stands

Arizona enters this weekend's series in Seattle at 86-76 (.531), sitting third in the NL West, 14 games back in the division. The Wild Card picture is similarly constrained — the Diamondbacks are ranked fourth in Wild Card positioning, 2.0 relative to the cut line, and per the verified standings data they have been eliminated from both the division race and the Wild Card race. They arrive at T-Mobile Park on a two-game losing streak.

The rotation for the Seattle series is set: Zac Gallen opposes George Kirby on Friday, Ryne Nelson faces Bryan Woo on Saturday, and Merrill Kelly draws Bryce Miller on Sunday. It is, in other words, a weekend that asks the Arizona offense to produce against a Mariners staff that has not historically been generous about it.

That context makes Perdomo's slump more than a storyline — it is a live operational variable in a series where the Diamondbacks need runs and their franchise shortstop is not currently providing them at the rate the lineup position demands.

What we don't know yet

Yahoo Sports raises the question of which parts of Perdomo's game have held up this season but does not answer it in the available material. The underlying profile — whatever might explain the gap between 2025 and 2026 — is not detailed in the report. Whether this is a mechanical issue, a sequencing issue, or something else entirely remains unaddressed in what Yahoo Sports has published.

It is also worth noting that the report frames this as an ongoing situation, not a resolved one. There is no timetable offered, no adjustment described, no club comment on how they are thinking about the three-hole going forward. The .671 OPS is the fact on the table; the explanation is still being written.

What to watch

The Seattle series is the immediate test. Gallen, Nelson, and Kelly will need run support against Kirby, Woo, and Miller — a rotation that does not hand out crooked numbers as a courtesy. If Perdomo's bat remains quiet through this weekend, the conversation about his 2026 season will only grow louder.

More broadly, the gap between his 2025 production and his current numbers is the kind of divergence that front offices and coaching staffs monitor closely when it involves a player at the center of their long-term construction. Per Yahoo Sports, the question of what has remained positive in his game is worth watching — because the answer to that question is where any path back to 2025 production would have to begin.

Arizona, eliminated from both the division and Wild Card races, is playing out a season that has not gone as planned. Perdomo's slump is one thread in that larger picture, but it is a significant one — franchise shortstops who produce seven-WAR seasons do not come along often, and the version of him that showed up in 2025 is exactly the kind of player a club builds its competitive window around. Whether 2026 is a detour or something more structural is the question that will follow this team into the offseason.