The Red Sox reinstated right-handed reliever Justin Slaten from the 60-day injured list and activated outfielder Rob Refsnyder from the 10-day IL, bringing the 40-man roster to capacity. To open active spots, the team optioned lefty Jovani Moran to Triple-A Worcester and placed first baseman Nathaniel Lowe on the paternity list. Slaten, acquired via the 2023 Rule 5 Draft, posted a 2.93 ERA and strong peripherals in 2024 and has a 3.47 ERA in 23 1/3 innings in 2025 while on the IL with shoulder inflammation. His strikeout rate and slider usage have declined this year while curve usage and walk rate rose slightly; velocity ticked up to 97 mph. Slaten projects as a primary late-inning setup option alongside Garrett Whitlock, Justin Wilson and Greg Weissert.
The Red Sox made a series of roster moves Thursday morning, most notably reinstating right-handed reliever Justin Slaten from the 60-day IL. That move brings Boston's 40-man roster to capacity. They'd previously had a vacancy after outrighting infielder Abraham Toro. The Red Sox also activated outfielder Rob Refsnyder from the 10-day injured list. To open active roster spots for Slaten and Refsnyder, they optioned southpaw Jovani Moran to Triple-A Worcester and placed first baseman Nathaniel Lowe on the paternity list.
Slaten is a big arm who'll provide a notable boost to 's bullpen. He's been effective since day one in the majors, quickly pitching his way into a high-leverage role last year, and actually saw a bump in velocity prior to his IL placement, with his average four-seamer rising from 96.4 mph last year to 97 mph in 2025. He'll join Garrett Whitlock, Justin Wilson and Greg Weissert as one of the primary setup options to closer Aroldis
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