Overview

• Sullivan announced the diagnosis in an Instagram post on Monday, confirming he will miss the remainder of the year.
• The 21-year-old was hurt early at D.C. United after collisions with João Peglow and left around the 13th minute after attempting to continue.
• He recorded three goals and eight assists in 31 games this season, emerging as one of the Union’s most creative midfielders.
• Philadelphia is expected to shift minutes to Milan Iloski and Indiana Vassilev, with Jeremy Rafanello, Cavan Sullivan and Alejandro Bedoya among additional options.
• No recovery timeline has been disclosed, leaving his 2026 USMNT roster hopes in doubt as the Union enter their final two regular-season matches.