The Diamondbacks and free agent first baseman Carlos Santana are in agreement on a deal, per Ken Rosenthal and Will Sammon of The Athletic. Previously, Jon Heyman of The New York Post. reported that a deal was close. It will be a one-year pact, per Nick Piecoro of the Arizona Republic. It appears to be a guarantee of about $2MM, per John Gambadoro of Arizona Sports 98.7 FM. The Snakes have a full 40-man roster and will need to make a corresponding move once Santana completes his physical and the deal becomes official.
Santana, 40 in April, made his major league debut back in 2010. While he’s never really been a star player, he has carved out a long career as a reliably strong contributor. He has always had strong strikeout and walk numbers while flashing a bit of pop with strong first base defense to boot. In over 9,000 career plate appearances, he has a 14.4% walk rate, 16.6% strikeout rate, .241/.352/.425 line and 114 wRC+. In almost 13,000 innings at first, he has racked up 48 Defensive Runs Saved and 45 Outs Above Average.
As one would expect, his production has declined as he has pushed closer to his 40th birthday. He still gets rave reviews for his glovework but his offense hasn’t been as robust in recent seasons. Dating back to the start of 2020, he has a combined line of .222/.321/.378 and a 96 wRC+. With the Guardians and Cubs in 2025, his 11% walk rate and 19.2% strikeout rate were still good numbers but down from his career levels. He slashed .219/.308/.325 on the year for a wRC+ of 82.
Despite the trend lines and the poor 2025 season, there are some reasons why Santana could be a good fit for the Arizona roster. A switch-hitter, he has always fared better against left-handed pitching. In 2025, he wasn’t great against pitchers of either handedness, with a .231/.318/.346 line and 89 wRC+ against southpaws. But as recently as 2024, he was able to put up a huge .286/.356/.578 line and 160 wRC+ in that split.
The Diamondbacks had Josh Naylor as their first baseman to begin 2025 but they traded him to the Mariners at the deadline. Coming into this offseason, they had Pavin Smith and Tyler Locklear atop the depth chart, but with question marks there.
Locklear, who came over from the Mariners in the Eugenio Suárez trade last summer, hasn’t yet found success against big league pitching. He also might not be ready for Opening Day this year. In a September game against the Red Sox, he was attempting to corral an errant throw from third baseman Jordan Lawlar when he made contact with batter-runner Connor Wong. He suffered a ligament tear in his elbow and a labrum injury in his shoulder and required surgery in October.
As for Smith, he has shown flashes of potential at times but with a heavy platoon split. A left-handed batter, he slashed .270/.348/.547 for a 140 wRC+ in 2024 but with most of that damage coming against righties. Last year, he had big splits again and also faded as the season went along, dealing with injuries in the second half. For the whole year, he hit .265/.361/.456 against righties but just .167/.375/.167 against lefties. He had a combined .261/.371/.446 line in the first half and .227/.261/.318 line in the second half. He spent time on the injured list due to an oblique strain and a quad strain and only played 87 games on the year.
More to come.
