White Sox To Sign Martín Pérez

The White Sox and left-hander Martín Pérez are in agreement on a deal, reports Robert Murray of FanSided. It’s a one-year, $5MM deal, per José F. Rivera of ESPN. That comes in the form of a $3.5MM salary and a $1.5MM buyout on a $10MM mutual option for 2026, per Jon Heyman of The New York Post. The deal is pending a physical for the Octagon client. The Sox have a full 40-man roster and will need to make a corresponding move once this deal becomes official. Their Josh Rojas deal is also still not official, so the club now needs to open two spots.

Pérez, 34 in April, is a soft-tossing veteran innings eater. He split last year between the Pirates and Padres, making 26 starts and logging 135 frames. He allowed 4.53 earned runs per nine innings, striking out 18.1% of batters faced, issuing walks at an 8.3% clip and getting grounders on 44.4% of balls in play. He averaged 91.3 miles per hour with his four-seam fastball.

Those stats are pretty close to his career numbers. Dating back to his 2012 debut, he has thrown 1,575 2/3 innings with a 4.44 ERA, 16.2% strikeout rate, 8.3% walk rate and 48.7% ground ball rate. His fastball velocity was naturally higher when he was younger, but not by much. His highest four-seam velocity in a season was 94.2 mph, back in 2019.

He did end the 2024 season on a high note. He posted a 5.20 ERA with the Bucs before being traded to the Padres at the deadline, then went on to allow 3.46 earned runs per nine after the deal. His 20.3% strikeout rate after the trade was a few ticks higher than the 16.9% rate he had with Pittsburgh. He changed up his pitch mix a bit, throwing more changeups and curveballs with the Friars, while reducing his usage of cutters and sliders.

That’s somewhat encouraging but Pérez has previously flashed better results without sustaining them. He posted a 2.89 ERA over 32 starts for the Rangers in 2022, which prompted Texas to issue him a $19.65MM qualifying offer for 2023. The southpaw accepted that but then his ERA normalized to 4.45 that year. As mentioned, he held pretty steady in 2024, with a 4.53 ERA.

It’s not the most exciting profile but he’s a sensible fit for the South Side of Chicago. The White Sox had a poor rotation last year and it’s in worse shape now. They traded Erick Fedde to the Cardinals and the deadline and then flipped Garrett Crochet to the Red Sox last month. Chris Flexen reached free agency at season’s end. That means that Jonathan Cannon is the only guy still on the roster who made more than ten starts for the Sox last year.

Pérez has made at least 26 appearances in five straight full seasons. in 2024, he went on the injured list due to a left groin muscle strain but was back in less than a month. That was his most significant IL stint since 2018. While no pitcher is guaranteed to stay healthy, Pérez is perhaps one of the safer bets to take the ball when it’s his turn, even if the results are more passable than outstanding.

Given the uncertainty in the club’s rotation, it’s a logical pick up. The Sox also added Bryse Wilson earlier this offseason, another move designed to bolster a group fairly lacking in experience. The final three spots are up for grabs, with Cannon, Davis Martin, Sean Burke, Drew Thorpe, Nick Nastrini, Jairo Iriarte, Jake Eder, Wikelman Gonzalez, Ky Bush and Juan Carela around to battle for opportunities. Prospects Noah Schultz and Hagen Smith aren’t yet on the roster but could push into the mix during the season.

Apart from Pérez and Wilson, no one in that cluster of rotation options has even one year of major league service time. The Sox can use Pérez as a veteran anchor, at least for a few months. If he’s pitching well, he could be flipped to a contending club at the deadline, just as he was last year. That would then open up second-half starts for whichever young pitcher has earned them.

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