[1] The 2018 season was the Union's most successful to date, earning the highest points total (50) and most wins (15).

[1] Additionally, the 2018 season transitioned Sporting Directors with Earnie Stewart accepting a general manager position with the United States Soccer Federation, and the Union hiring Ernst Tanner; former academy manager for Red Bull Salzburg.

Source: MLS Position references Eastern Conference standings.

[6] In May 2018, long time Philadelphia Union forward Sebastian Le Toux announced his retirement from professional soccer.

[20] His retirement ceremony was held on June 23, 2018, during a home match against Vancouver Whitecaps FC, where he was the first inductee into the Union's Ring of Honor.