Philadelphia Union II is the reserve team of Major League Soccer's Philadelphia Union, competing in MLS Next Pro. The team is based in Chester, Pennsylvania, and plays its home matches at Subaru Park's practice fields or nearby venues, wearing the Union's blue and gold colors. Established to bridge the gap between the club's acclaimed academy and the first team, Union II serves as the final proving ground for the organization's top prospects. The team follows the same tactical philosophy as the senior side, emphasizing high-press, possession-based football. Success for Union II is intrinsically linked to player development, with numerous alumni like Jack McGlynn and Quinn Sullivan having graduated to become first-team contributors and even US national team players. The atmosphere at matches is focused and developmental, attended by scouts, coaches, and dedicated fans. Philadelphia Union II is a critical component of one of MLS's most productive youth systems, essential for the club's long-term strategy.