The Diamondbacks took a shot on Nolan Arenado in January, hoping the veteran third baseman would steady the hot corner during a push for a Wild Card spot. Arizona’s postseason chase never came together, but Arenado did his part. After a long offensive slide from 2023 through 2025 with the Cardinals, the 35-year-old put together a comeback season that looked shaky at times, then finished with a surge.
For much of the first half, the numbers pointed to a real rebound. Through the end of May, Arenado was hitting .269/.350/.451 over an even 200 plate appearances. He was striking out at a 19.0% clip and walking 9.0% of the time, both better than league average, and his 121 wRC+ would have marked his best full-season showing since 2022, when he finished third in NL MVP voting behind Paul Goldschmidt and Manny Machado.
Then came June, and it was rough. Arenado logged 106 plate appearances and hit just .196/.255/.299, producing a 53 wRC+.
That slump dragged his overall line down to a 97 wRC+, which made the early bounce look less like a revival and more like another step in the decline. He did rebound some in July and August, though the production was more power-driven than usual and the batting averages stayed modest.
By the end of August, he was at .238/.312/.429 with a 103 wRC+, an improvement over his 84 wRC+ with St. Louis in 2025, but still not quite the old Arenado.
He also dealt with a torso injury in mid-August, undergoing an MRI and missing two days.
September changed the picture. As Arizona tried to hang on in the Wild Card race, Arenado caught fire and looked, for a stretch, like a middle-of-the-order force again.
Over his final 95 plate appearances, he hit .349/.432/.723 and launched nine of his 30 homers on the year. The Diamondbacks’ season ended with the Phillies’ win over Tampa Bay in Game 162, and Arenado closed the book on a line of .255/.331/.475 with 86 RBIs, a 20.0% strikeout rate, an 8.7% walk rate, a 120 wRC+, and 3.5 WAR from FanGraphs.
There’s a financial angle here, too. Arenado is under contract for next season at a $15MM salary, with Arizona responsible for $6MM and the Cardinals covering the rest.
That matters for a club expected to trim payroll while still looking to add at first base, DH, and likely the rotation. If Arenado stays healthy and productive in his age-36 season, third base won’t need to be added to that list.
Still, the underlying indicators don’t exactly scream repeat performance. Arenado’s average exit velocity sat at a career-low 85.2 mph, and his 31.2% hard-hit rate was also a career low.
Statcast placed those marks in the third and 14th percentiles, respectively. His .231 expected batting average lagged behind the .255 he actually posted, and the same gap showed up in power, where his .475 slugging percentage far outpaced an xSLG of .366 that lined up with his 2025 level.
He also became more pull-heavy than usual, pulling 52.2% of his balls in play compared with 44.7% in 2025. That may have been a way to compensate for declining bat speed by getting to the ball earlier instead of spraying it around the field the way he did earlier in his career. Even with those concerns, he still did damage against fastballs, sliders, and sinkers, posting Run Values of +13, +7, and +4 against those pitches, while sweepers gave him trouble at -4.
The Statcast page is mostly a sea of blue, but not all of it is bad. Arenado finished above average in Batting Run Value at +23 and held a 20.0% strikeout rate, a career high.
He was around average in whiff rate and below average in most other areas. That mix of production and warning signs suggests the gap between his actual and expected power is likely to close next year, and that repeating this season’s output may be a tall order.
Defensively, though, he still held up at third base. He’s no longer the Gold Glove machine he was in Colorado, but he still graded out at +2 Outs Above Average. Defensive Runs Saved was less generous at -4, while Statcast put him in the 61st percentile in Fielding Run Value.
Arizona is clearly hoping Arenado ages better than he did during the 2023-25 downturn. If he lands somewhere between that stretch and this year’s bounce-back, while still giving the club competent defense at third, he’ll remain a useful piece as the Diamondbacks try to retool in 2027.