Active-Roster Evaluation, Defensive Versatility and First-Base Vacancy

First base remains a major offseason vacancy after weak production and Pete Alonso's non-re-signing, while the second-base plan is also unsettled. Jared Young and Brett Baty remain possible internal answers, but external additions are possible; Mark Vientos' poor 2026 production and Marcus Semien's disappointing first season have intensified scrutiny of recent roster decisions.