Red Sox Targeting Left-Handed Bullpen Help

The Red Sox are scouring the bullpen market for free agent southpaws, and MassLive.com’s Chris Cotillo reports that Tim Mayza and Cionel Perez are two of the left-handers on the team’s radar.  Boston has also maintained interest in Justin Wilson and Danny Coulombe, as Cotillo initially reported last month.

Wilson is the most known quantity for the Sox, as he posted a 3.35 ERA, 27.5% strikeout rate, and 9.7% walk rate over 48 1/3 innings out of the Boston pen in 2025.  While the walk rate was on the high side and Wilson’s fastball velocity dropped from 95.5mph in 2024 to 94.5mph last year, it was still a very solid season for Wilson, and a sign that he is now fully recovered from the injuries that basically erased his entire 2022-23 seasons.

One complication for the Red Sox and any other suitor pursuing Wilson is that the veteran isn’t entirely committed to pitching in 2026.  According to The Athletic’s Ken Rosenthal and Will Sammon, Wilson wants “a fair deal with a legitimate World Series contender” and is willing to hang up his cleats after 13 Major League seasons if his demands aren’t met.

As Cotillo notes, Wilson and his agents at ACES could be using the retirement threat as leverage in contract talks.  That said, it also isn’t out of the question that Wilson is nearing the end of the line, after turning 38 years old last August.  Another one-year guarantee seems likely given Wilson’s age, and he is undoubtedly looking for a raise on the $2.25MM guarantee he received from the Red Sox on his deal for the 2025 campaign.

The Sox have seen plenty of Mayza and Perez over the years in AL East battles.  Mayza spent his first seven MLB seasons with the Blue Jays and Yankees before pitching with the Pirates and Phillies in 2025, and Perez has worked out of the Orioles’ bullpen from 2022-25.  Either pitcher could be had on a one-year contract and perhaps not even a guaranteed big league deal, as Mayza and Perez are both looking to bounce back from rough 2024-25 seasons.

Mayza (who turns 34 next week) had a 3.78 ERA over only 16 2/3 innings in 2025, as a lat strain and a teres major strain kept him on the injured list for much of the year.  He likely would’ve been a deadline trade candidate if healthy, and the Pirates put him on the waiver wire at the end of August, with Philadelphia claiming the veteran to add bullpen depth for the stretch run.  Mayza had only a 4.91 ERA in his eight games and 7 1/3 IP with the Phils, and he wasn’t included on their playoff roster.

Perez seemingly broke out with a tremendous 1.40 ERA over 57 2/3 relief innings for Baltimore in 2022, but his results have steadily declined over the past three seasons.  The bottom completely fell out for Perez last year, as he had an 8.31 ERA and almost as many walks (18) as strikeouts (21) over 21 2/3 innings.  Perez hasn’t pitched in the majors since late May, when the Orioles designated the lefty for assignment and then outrighted him off the 40-man roster.

Since the start of the 2022 season, Coulombe has a 2.38 ERA — the ninth-lowest ERA of any pitcher who has tossed at least 130 Major League innings (Coulombe has 136 1/3 IP).  A 26% strikeout rate and 8.1% walk rate support this excellent bottom-line number, though Coulombe struggled after being dealt from the Twins to the Rangers at last year’s trade deadline.

Coulombe turned 36 in October so he’ll likely be limited to one-year offers as well this winter, but he is still drawing a good deal of interest.  Rosenthal and Sammon write that five teams are in on Coulombe, which may or may not include the Red Sox.

Aroldis Chapman is the top southpaw in Boston’s bullpen, but with Chapman set to operate as the closer, the Sox are in need of at least one experienced left-hander to work in a more situational capacity.  Jovani Moran projects as the top non-Chapman option amongst Boston’s current bullpen mix, but Moran has a 5.44 ERA over 46 1/3 innings since the start of the 2023 season, and he missed most of the last two years recovering from Tommy John surgery.