December 5, 2025
Castellanos said Friday that he would "really welcome" playing first base if asked,
MLB Network reports.
Analysis
Castellanos has never played first base before and has been a full-time right fielder since 2018. However, he came up through the minors as a third baseman and that was his primary position through his first five seasons in the big leagues, so he's not foreign to the infield. Castellanos is set to make $20 million in 2026 in his final year under contract with the Phillies, but the expectation is he will be either traded or released by Philadelphia this offseason.