The U.S. Open Cup will have a first-time champion this year.
Aug 8, 2018; Chester, PA, USA; Philadelphia Union forward Cory Burke (19) kicks the ball past Chicago Fire defender Johan Kappelhof (4) during the second half at Talen Energy Stadium. Bill Streicher-USA TODAY Sports
The Philadelphia Union, who lost in both of their previous appearances in the U.S. Open Cup final, and the Houston Dynamo, who never previously made the title game, both advanced with semifinal wins Wednesday.
Behind three second-half goals, the Union beat the Chicago Fire 3-0 in Chester, Pa. Cory Burke scored in the 59th…