The Rays acquired McCollum from the Phillies on Wednesday in exchange for Yoniel Curet, Matt Gelb of The Athletic reports.
McCollum pitched at three different levels in 2025, finishing with a 3.07 ERA and 59:16 K:BB over 55.2 innings. The 26-year-old reliever has not yet reached the majors and will likely begin the 2026 season at Triple-A Durham.