Red Sox Sign Veteran Pitcher With Long Track Record of Success

Team Israel's pitcher Tommy Kahnle walks off the field during 2026 World Baseball Classic game.

The Boston Red Sox made one more move before Opening Day.

The club has signed veteran reliever Tommy Kahnle to a minor-league deal, bringing in a proven arm with a long track record of success.

Red Sox add Tommy Kahnle to bullpen mix

Kahnle, 36, joins the Red Sox after a rocky 2025 campaign with the Detroit Tigers, where he posted a 4.43 ERA across 66 appearances.

The numbers don’t jump off the page, but the season was a tale of two halves. He carried a 1.35 ERA into late June before struggling badly in the middle of the year, then rebounded with a 2.20 ERA over his final stretch.

Heyman: Tommy Kahnle to sign a minor-league deal with the Red Sox.
— Underdog MLB (@UnderdogMLB) March 17, 2026

Kahnle will earn $1.5 million if he makes the big-league roster, with another $250,000 available in incentives.

With the Red Sox still looking to round out its bullpen depth, this move makes sense late in camp. Boston has already added arms like Danny Coulombe this spring, and Kahnle now gives them another experienced option with upside.

Tommy Kahnle brings bounce-back potential

Kahnle’s recent track record before 2025 is pretty impressive.

With the New York Yankees in 2024, he posted a 2.11 ERA in 50 appearances. He also recorded a 2.66 ERA in 2023 and a 2.84 ERA with the Los Angeles Dodgers in 2022.

Across 11 MLB seasons, he owns a solid 3.61 ERA in more than 450 games, showing he has consistently been able to get outs in high-leverage spots.

The Red Sox have signed reliever Tommy Kahnle on a minor league contract, per @JonHeyman.

It’s finally happened. After multiple offseasons of the two being connected. Hard not to like some depth like this being added to the group. pic.twitter.com/USsfedBqnl
— Tyler Milliken (@tylermilliken_) March 17, 2026

Kahnle relies heavily on his changeup, throwing it more than 85 percent of the time, one of the highest rates in baseball. When it’s working, it can neutralize both right- and left-handed hitters, making him a valuable bullpen weapon.

He also showed flashes of form recently, tossing scoreless innings for Team Israel during the World Baseball Classic.

If Kahnle finds his form again, he could carve out a solid role in Boston’s bullpen. If not, there’s little downside.

Photo Credit: Sam Navarro-Imagn Images