Red Sox Interested In Mitch Keller

The Red Sox are among a number of teams with interest in Pirates right-hander Mitch Keller, according to a report from Noah Hiles of the Pittsburgh Post-Gazette. Hiles mentions the Yankees, Mets, and Cubs as being among the other teams that have reached out to the Pirates about Keller, though each of those clubs has previously been connected to the righty this summer.

It should be of little surprise that Boston would have interest in Keller’s services. The 2023 All-Star is in the midst of a career season with the Pirates. He’s posted a 3.69 ERA in 22 starts with a 3.44 FIP. Keller’s strikeout rate (18.8%) is down substantially from previous seasons, which could be a cause for concern, but his 6.6% barrel rate is the lowest of his career and he’s limited his walks to a tidy 6.2%, also a career low. More advanced metrics are skeptical of Keller’s ability to continue producing at this rate with such a low strikeout rate, however; the right-hander’s 4.21 SIERA is the 18th-weakest figure among the league’s 59 qualified starters this year. That suggests he may profile more as a back-of-the-rotation starter than the playoff-caliber #2 his surface-level numbers this year might otherwise make him out to be.

Despite those concerns, Keller remains an attractive trade target. He’s been fairly durable in recent years, with the league’s 12th-highest innings total since 2022, and at just 29 years old he’ll remain in his prime for a few more seasons. With three more years of team control after this one after he signed an extension with the Pirates last year, Keller would be a fixture of an acquiring club’s rotation for years to come. That should be especially attractive to the Red Sox, who could lose both Lucas Giolito and Walker Buehler to free agency this winter, though Giolito’s deal has a 2026 option. Either way, they will need reliable arms to fill out the remainder of their rotation alongside Garrett Crochet and Brayan Bello. He should be attractive to a number of other teams as well; in addition to the clubs mentioned above, Keller has also been connected to the Blue Jays.

Despite that solid base of teams Keller is drawing interest from, however, Hiles emphasizes that there’s no guarantee he’ll actually be traded this summer. Hiles reports that the Pirates are “comfortable” holding onto Keller if their “steep” asking price isn’t met, and Hiles adds that Pittsburgh could revisit dealing Keller in the offseason, when it…