Did anyone really win the Caleb Durbin trade? For a couple of months, it looked like the answer was Milwaukee. By the end of the year, Boston had pushed back in a big way.
The six-player swap in early February sent infielder Caleb Durbin from the Brewers to the Red Sox, a move Boston made after coming up short in its search to replace third baseman Alex Bregman in free agency. Andruw Monasterio, Anthony Seigler and a draft pick also landed with the Red Sox, while Milwaukee took David Hamilton and left-handers Kyle Harrison and Shane Drohan.
At first, the deal looked rough on Boston’s side. Durbin never solved the third-base problem right away, and by the end of May he was sitting on a .530 OPS.
At that point, he had the second-lowest wRC+ among qualified hitters. He was part of a messy first half for the Red Sox, who fired manager Alex Cora near the end of April after a 10-17 start.
Chad Tracy stepped in as interim manager, but the club didn’t straighten out immediately.
Meanwhile, Harrison was rolling in Milwaukee. He opened the season as one of the most effective pitchers in the league, taking a 1.57 ERA into June.
The Brewers had him working with a raised arm angle, and the changes paid off: he added induced vertical break to his four-seamer and got more drop on his slurve. Those tweaks helped him and ace Jacob Misiorowski give Milwaukee a nasty pair at the top of the rotation.
Then the story turned. Durbin caught fire in June, slashing .326/.359/.605, and became a real force in a Red Sox lineup that helped revive the team’s postseason hopes.
During Boston’s 15-game win streak in July, he hit .291 with three homers and 13 runs scored. He kept producing after that as the Red Sox cruised into a Wild Card spot.
His final numbers look a lot like a strong rookie season all over again: 13 homers, 20 steals and a 100 wRC+. After already showing he could handle both second and third base with Milwaukee, Durbin again gave Boston a plus glove. He finished with 13 Defensive Runs Saved at third.
“It is funny how the [offensive] numbers ended up being very similar,” Durbin told Alex Speier of the Boston Globe last week. “I’d like to think the stretch I had in the beginning of the year is kind of an anomaly. … If you take that out, I do feel like I had a better season [than 2025].”
Harrison’s year went the opposite way. His ERA almost doubled in seven starts from June into early July, and he landed on the injured list before the All-Star Break with forearm tightness.
When he came back, his velocity was down. Milwaukee brought him back in August, but he put up a 5.67 ERA across six starts and eventually got shifted to the bullpen.
His first relief appearance was brutal: against the Reds, he gave up four earned runs without getting an out. He has stayed on the Brewers’ roster through the playoffs, though he has not appeared in a game.
The other pieces in the trade mattered too, just not in headline-grabbing ways. Seigler and Monasterio gave Boston useful infield depth while the team dealt with long stretches without Trevor Story, Isiah Kiner-Falefa and Romy Gonzalez, plus zero at-bats from Triston Casas.
Drohan turned in a solid stretch as both a long reliever and starter before fading late; he’s on the playoff roster, but has thrown only one inning. Hamilton, somewhat unexpectedly, has been the most productive postseason player of the bunch, going 6-for-17 with a homer and three steals.
If you lean on Baseball Reference’s WAR, Boston gets the edge. Durbin posted 4.4 WAR, while Seigler and Monasterio added 0.5 and 0.6, respectively, for a combined 5.5.
Hamilton, Harrison and Drohan totaled about half that. Even so, the final word isn’t written yet.
These players haven’t reached arbitration, and there’s still plenty of time for either side to get more from the deal.
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