3:06pm: The Red Sox have officially announced Wilson’s signing. Their 40-man roster is now full.
1:08pm: Wilson will earn $2.25MM with $750K of available incentives based on games pitched, Bradford further reports.
11:49am: The Red Sox and left-hander Justin Wilson have reached agreement on a deal, per Robert Murray of FanSided on X. Rob Bradford of WEEI.com reports that it’s a one-year, major league deal that’ll pay Wilson similarly to his 2024 contract with the Reds, when he earned $1.5MM with another $1MM available via incentives. Wilson is represented by ACES.
Wilson, 37, has a lengthy track record in the majors but has struggled with injuries in recent seasons. He returned from Tommy John surgery last year to pitch 46 2/3 innings for Cincinnati but was tagged for an unsightly 5.59 earned run average in that time. A good portion of those struggles were due to spikes in his average on balls in play and home run rate, the latter of which was directly influenced by the hitter-friendly nature of his home park in Cincinnati. Seven of the ten homers surrendered by Wilson last year came at Great American Ball Park, which has been far and away MLB’s most homer-friendly setting over the past three seasons, per Statcast’s Park Factors. (Boston’s Fenway Park is right in the middle of the pack at No. 16.)
Wilson’s run-prevention numbers were uninspiring, but his rate stats were far more encouraging. Both his 24.4% strikeout rate and 6.2% walk rate were better than league average. The 95.5 mph he averaged on his four-seamer was the second-best mark of his career, trailing only his 95.9 mph average in 2017. The 92.3 mph he averaged on his cutter was a career-high. Metrics like xFIP (3.99) and SIERA (3.41), which normalize a pitcher’s homer-to-flyball rate, both feel Wilson is a strong bet to rebound in 2025 if he can continue at his 2024 pace.
From 2015-20, Wilson was one of the most consistently effective lefties in the game. He appeared in 344 games between the Yankees, Tigers, Cubs and Mets during that span, totaling 291 innings of 3.41 ERA ball with a 28.2% strikeout rate and 10.8% walk rate. His command looked far better than usual in his ’24 showing with the Reds, and his ability to miss bats didn’t seem overly compromised. The veteran Wilson is no stranger to late-inning work, having picked up 142 holds and 20 saves in his 12 major league seasons.
Entering the offseason, Brennan Bernardino was the only lefty reliever who could be comfortably projected for Boston’s 2025 bullpen. Fellow southpaws Bailey Horn, Cam Booser and Chris Murphy are all on the 40-man roster as well. However, Murphy had Tommy John surgery last year and won’t be ready for Opening Day. Horn and Booser come with little to no big league experience of which to speak. Wilson will provide skipper Alex Cora with a seasoned veteran who’s still capable of missing bats and, if he can get back to pre-surgery levels of run prevention, could eventually emerge as a viable leverage option at a bargain price point.