The Phillies selected McFarlane's contract from Double-A Reading on Tuesday.
McFarlane made his return from Tommy John surgery in 2025 and spent most of the season with High-A Jersey Shore, posting a 4.79 ERA and 1.35 WHIP over 73.1 innings. The right-hander is likely still a couple years away from seeing the majors, but the Phillies still opted to protect him from the upcoming Rule 5 Draft.