Sporting Kansas City is now 12-4-2 in season-opening games, the best mark in the league.
Zusi's unassisted goal came in the 41st minute and tied it at 1.
Oriol Rosell scored in the 66th minute with Zusi receiving the assist from a free kick. SKC put the game away when Claudio Bieler scored in the 83rd minute.
The Union took a 1-0 lead on a goal by Frenchman Sebastien Le Toux, the club's career leader with 26 goals who was reacquired by Philadelphia in the offseason.
- Sports & Recreation
- Sporting Kansas City
- Graham Zusi
- Claudio Bieler