The shorthanded Union lost at home for the first time since 2021 after conceding two goals in the first 10 minutes.
Union match reports
Match report: CF Montreal 3-2 Philadelphia Union
Montreal came from behind late in the match to down the 10 men of Philadelphia Union on Saturday night.
Match report: Philadelphia Union 1-0 Chicago Fire
Joaquin Torres rescued three points with a late winner as Philadelphia defeated Chicago 1-0.
Match report: Alianza FC 0-0 Philadelphia Union
In their return to the Concacaf Champions League, the Union played out a scoreless draw with their Salvadorean hosts.
Match report: Inter Miami CF 2-0 Philadelphia Union
The Union picked up their first loss of the season in South Florida on Saturday afternoon.
Match report: Philadelphia Union 4-1 Columbus Crew SC
Braces from Daniel Gazdag and Julian Carranza handed the Union a comfortable victory as the 2023 MLS season kicked off.