"Both Marcus Semien and Brandon Nimmo are relatively known quantities at this point. Semien is 35, has nearly 40 career fWAR, and started his 30s by alternating 6+ fWAR and 4+ fWAR seasons until a 2025 in which he substantially underhit his xwOBA and had a defensive dropoff from his best-in-class performance in 2023 and 2024. All that led to "just" a 2.1 fWAR season across 534 PAs."
"Nimmo will turn 33 right around Opening Day, and has 28.0 fWAR so far in his career. He had a career high 5.5 fWAR in 2022, 4+ in 2023, and has been right around 3.0 the past two seasons. His line was buoyed by a bit of xwOBA overperformance in 2025; his xwOBA has declined year-over-year from 2023 to 2025."
The Mets and Rangers completed a straight player-for-player trade of Marcus Semien for Brandon Nimmo, emphasizing positional fit and roster liquidity. Semien, 35, approaches 40 career fWAR and posted a 2.1 fWAR season in 2025 after underperforming his xwOBA and showing defensive regression from elite 2023–24 levels. Projection systems like Steamer estimate roughly 3.0 WAR for Semien, which could be conservative if 2025 was anomalous defensively. Nimmo, nearing 33, has 28.0 career fWAR, produced around 3.0 WAR recently, experienced offensive decline and an xwOBA drop, and lost value by moving from center to left field.
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