Inspiration.
Before looking at offense, it must be said that in the last two seasons Carlos Santana’s defense at first base was elite. In 2024 he won the Gold Glove at first base, and in 2025, he was one of the three nominees. Averaging the last two seasons, his yearly Outs-Above-Average (OAA) was 11 (truly elite).
The Diamondbacks will benefit from the synergy of four excellent infield defenders (Santana at first base, Ketel Marte at second base, Geraldo Perdomo at short stop, and Nolan Arenado at third base).
The interesting question is, “How well will Santana bat?”
Worth seeing would be a grand slam.
In his career so far, Carlos Santana hit 6 grand slams. His latest grand slam happened last season. Certainly, it could happen in 2026.
The oldest Diamondback to hit a grand slam was Steve Finley. On 5 May, 2004 he hit a grand slam against the Mets. It increased the win probability from 85% to 98%. Steve Finley was 39 years old (plus almost two months). Data from Stathead in Baseball Reference.
Honorable Mention goes to the Diamondbacks’ Lourdes Gurriel Junior. He hit a grand slam in the 2023 World Series. But he was a relatively young 30 years old.
If/when Carlos Santana hits a grand slam for the Diamondbacks, he will become the oldest Diamondback to hit a grand slam in either the regular season or the postseason. He will be 39 years old (prior to April 8) or 40 years old (on April 8 or later). Carlos Santana has a realistic chance to break a record!
His batting has strengths and weaknesses.
In 2019, Carlos Santana won a Silver Slugger award. Six years later, in his age 40 season, his batting is on the declining side of the aging curve. The question is not whether he will again win a Silver Slugger award. Instead, the question is whether his batting will be better than league average.
Last season, one weakness was a career high swinging at out-of-zone pitches (25.1%) with a career low contact rate for out-of-zone pitches (53.6%) per FanGraphs. However, his first 11 PAs in spring training showed improvement in contact percentage (26.3% O-swings with 80% contact).
Another weakness is that last season, his batting performance dropped against sliders and sweepers (based on 22 balls in play against those pitches against left-handed pitchers per Baseball Savant).
Although he is a switch hitter, he bats better against left-handed pitchers.
- A strength is that against left-handed pitchers, when he puts the first pitch in play, his batting results are monstrous (.333 OBP, .850 SLG, and .477 wOBA per Baseball Savant).
- Another strength is that against left-handed pitchers is that when he hits line drives, his batting results are great (.519 OBP, .556 SLG, and .471 wOBA per Baseball Savant).
To answer the interesting question: It’s likely he will hit above-league average against left-handed pitchers.
His mental game is a good fit with the Diamondbacks.
Carlos Santana prepares every day. That reflects his strong desire to play well and that reflects excellent mental discipline.
Carlos Santana focuses on playing hard one day at a time. That reflects his focus on making a positive impact in every game and that reflects his strength in ignoring distractions.
In 2023, the Diamondbacks made it to the World Series and lost. Players needed to mentally deal with that loss. Carlos Santana had previously dealt with a similar loss.
“…Disappointment? I don’t think there was any disappointment after losing to the Cubs in the World Series, because I felt like a champion. Yes, we felt like champions, even though we didn’t win it all. Crazy, right? We lost, but we still felt very grateful to God. And I think the main reason we felt like champions is because we fought until the end. We gave it everything we had. Somebody had to lose. We lost, but this town loved us the same as if we won. And we loved them right back.” — Carlos Santana, April 2017
How to know it’s him.
If a fan sees a Diamondbacks player wearing shorts and tall socks (baseball attire that he is comfortable wearing), and if that fan hears other players calling him grandpa, then they can be sure it’s Carlos Santana. Perhaps an easier way to be sure is to look at the number on his Diamondbacks jersey (it is #41).
“…they [Guardian teammates] told me my nickname, Grandpa.” — Carlos Santana, March 2025
Summary.
In 2024 he won a Gold Glove. His defense at first base is elite.
If he hits a grand slam with the Diamondbacks, he will break the record for the oldest Diamondback to hit a grand slam.
It’s likely he will hit above-league average against left-handed pitchers.
His mental game is a good fit with the Diamondbacks. Also, his team has lost in the World Series.
His nickname with the Guardians was Grandpa.