In his first two seasons at the helm of the Boston Red Sox, Chief Baseball Officer Craig Breslow disappointed at the trade deadline, failing to provide his team with the reinforcements necessary to finish the season on a high note. Now in his third year at the helm, Breslow has finally cracked the code, making four deals to set Boston up for not only the stretch run in 2026, but also to put them in a much better position for 2027 and beyond. 

Here's the breakdown:

Breslow got out ahead of the trade market on July 25, sending rookie starter Connelly Early to the Washington Nationals for power-hitting infielder Curtis Mead. Throughout the season, the Red Sox have lacked the power typically needed to succeed in October. After a disappointing start to his career, Mead made offseason changes to his stance and swing that unlocked a new level at the plate, leading to a breakout year in 2026. 

Upon being traded to Boston, the 25-year-old Mead immediately ranked second on the team, behind only Contreras, in on-base percentage (.352), slugging percentage (.505), OPS (.856), and home runs (17). 

Unfortunately, in a stroke of brutal luck, Mead was hit by a pitch in his second at-bat in a Red Sox uniform, breaking his wrist and landing him on the injured list for what's expected to be a six-to-eight-week recovery. 

In one of the biggest moves of the deadline, Breslow took a big swing, acquiring All-Star catcher Adley Rutschman from the Baltimore Orioles in exchange for a monster prospect package headlined by starters Anthony Eyanson and Kyson Witherspoon. 

With the addition of Rutschman, a three-time All-Star, Breslow has finally replaced the star power in the Boston lineup vacated by the 2025 trade that sent Rafael Devers to San Francisco. 

Along with adding some star power to the lineup, Breslow was able to find a long-term solution at a premium position: catcher. Whether it be Jarrod Saltalamacchia, Christian Vasquez, Carlos Narvaez, or countless others, the Red Sox have lacked a true franchise catcher since Jason Varitek's retirement in 2011. 

Along with providing a massive boost to the Boston lineup with his bat, Rutschman is among the best defensive catchers in baseball in both his pitch-receiving and throwing base stealers out. 

For a team that has placed such a strong emphasis on building around pitching and defense, Rutschman is the perfect blend of excellent defense behind the plate, while also giving the Red Sox a marquee name atop the lineup. 

It wasn't all good for Breslow though, as the deadline came and went with not every box checked, and the departure of a player who was once thought to be a franchise cornerstone. 

Among the items on Breslow's wishlist was another starting pitcher who could not only account for the innings lost by sending Early to Washington, but also help limit the workload being placed on the staff as a whole. For instance, rookies Payton Tolle and Jake Bennett have already surpassed their career highs in innings pitched. 

Plenty of veteran arms changed hands for fairly affordable prices, including Kevin Gausman, who was traded from the Blue Jays to the Cubs for a fairly light prospect package. 

Whether it be Gausman, Clay Holmes, Braxton Garrett, or any number of starters dealt, there were arms aplenty to be had, and Breslow chose to stand pat, happy with the rotation he assembled in the offseason. 

Then, of course, there's the deal that sent Marcelo Mayer to San Francisco in exchange for left-handed reliever Erik Miller. While Miller has all of the traits that Breslow looks for in arms and comes with three years of control after 2026, Mayer is a high price to pay. 

Moving on from Mayer, at his lowest value since he was drafted fourth overall in 2021, is a sure sign that the relationship between the team and the player had soured to a point of no return. 

Regardless of who is more at fault for that, the player or the team, his being traded for an intriguing reliever is an organizational failure. Mayer was the first major piece in what has been a nearly decade-long rebuild in Boston. He was seen as the next franchise cornerstone at shortstop, expected to take the baton from Red Sox legends of the past, Nomar Garciaparra and Xander Bogaerts. 

Unceremoniously moving on from that player with that kind of prospect pedigree bafter only 114 games at the major league level for a relief arm is, at best, asset mismanagement and, at worst, organizational malpractice, and only time will tell which it is. 

There are still plenty of questions that remain to be answered before the complete picture on Breslow's third deadline: Can Rutschman stay healthy and return to his 2024 form? Will Mead return before the end of the season? Can the Boston pitching lab turn Miller into a dominant back-end relief arm? Just to name a few. 

However, for two seasons, the noise has been incredibly loud surrounding Breslow's handling of the trade deadline, begging him to get out ahead of the market and make a move before the last second, and take a big swing, landing a star, giving the Red Sox the reinforcements the surging team deserved. Those are things he accomplished in 2026, showing he has learned from his past mistakes. 

Ultimately, the lack of an addition to a starting rotation that has posted the third-lowest ERA in the sport is a bit of nitpicking, and only time will tell whether the team was not patient enough with Mayer or capitalized on a depreciating asset before it became completely valueless. 

Far and away, this was Breslow's best trade deadline since he took over in Boston in 2024, and for that he should be commended, regardless of how things play out down the stretch. 

Final Grade: B

Boston will look to make it seven straight wins and nine straight series wins on Wednesday night, taking on the Chicago White Sox in game two of a three-game set from Fenway Park. Sonny Gray (13-2, 2.93 ERA) will get the start for the Red Sox opposite Sean Burke (7-5, 3.04 ERA) for the White Sox. First pitch is set for 7:10 p.m. ET. 

Zach Coe and David Azer broke down all of the Red Sox moves from an exciting trade deadline day across all of baseball in the latest episode of the 'Entering Kenmore' Podcast. Check it out wherever you get your podcasts or on YouTube!