Aroldis Chapman’s 1.08 ERA Makes Boston Red Sox Trade Puzzle Harder

Aroldis Chapman’s 1.08 ERA over 83 innings gives the Boston Red Sox a premium trade chip if they sell before the 2025 deadline.

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Aroldis Chapman’s 1.08 ERA Makes Boston Red Sox Trade Puzzle Harder

Aroldis Chapman has given the Boston Red Sox one of the cleanest bullpen lines in the league. He has posted a 1.08 ERA over 83 innings in 2025, and that kind of production turns him into a trade piece if Boston shifts from adding to selling before the deadline.

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Sam Kennedy and Boston Red Sox

Sam Kennedy has said selling is a possibility if results do not turn around. That is the hinge point for Chapman’s status. If the Red Sox stay in the market to buy, he stays in the late-game mix. If the results slide, his value becomes part of the deadline return instead of the bullpen plan.

That return would not be light. Recent deadline deals for elite relievers show the market paying for quality, not just saves, and Chapman’s 1.08 ERA over 83 innings puts him in that lane. A pitcher with that line is treated as more than a rental arm; he becomes a piece that can move multiple prospects if a club wants impact now.

Jhoan Duran and Mason Miller

The clearest comparison came when Jhoan Duran went from the Twins to Philadelphia the day before the 2025 deadline for Eduardo Tait and Mick Abel. Duran had two and a half years of team control, and that made the deal look closer to a starter package than a simple relief swap.

Mason Miller and JP Sears brought Leo De Vries and the Padres No. 3, No. 13, and No. 17 prospects. Miller had four and a half years of team control when he was traded, which pushed the return higher, but the structure still tells the same story: an elite late-inning arm can force a prospect-heavy deal when the seller has leverage.

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Tanner Scott and Jorge Lopez

Tanner Scott’s 2024 move from the Marlins to the Padres is another useful marker. He had a 1.18 ERA across 45 2/3 innings at the time, and Tanner Scott and Bryan Hoeing netted the Marlins the Padres No. 2, No. 4, No. 5, and No. 24 prospects. Jorge Lopez’s 2022 trade from the Orioles to the Twins came with a 1.68 ERA in almost 50 innings. Different years, same message: late-inning performance drives the return.

For the Red Sox, the practical decision is simple. Hold Chapman and keep an elite arm in the bullpen, or sell and use his value to restock the system before the 2025 deadline. His numbers make him one of the cleanest trade chips on the market; Boston’s direction decides whether that chip stays in uniform or turns into prospects.

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Data-driven sports analyst covering advanced metrics in baseball and basketball. Former college athlete and ESPN digital contributor.