Philadelphia adds Walker Buehler in September to bolster a rotation missing Zack Wheeler. Buehler, released by Boston after posting a 5.45 ERA in 112 1/3 innings, will be postseason-eligible as Philadelphia navigates Wheeler’s absence. The Phillies’ current depth features Cristopher Sánchez, Jesús Luzardo, Ranger Suárez, Aaron Nola, Taijuan Walker, and Alan Rangel, with Buehler’s role open as a short- or long-relief option, or a starter who could influence Philadelphia’s title pursuit.