[U.S. OPEN CUP] Sporting Kansas City will be hosting the 2012 Lamar Hunt U.S. Open Cup final thanks to a 2-0 win over the the Philadelphia Union in Wednesday's semifinals. A goal by Jacob Peterson that sneaked inside the post past Union keeper Zac MacMath broke a scoreless draw in the second half at the Union's PPL Park.

Peterson's header goal came off of a Graham Zusi free kick. Zusi put the game away with a goal of his own in the 93rd minute.

The header looked to fool MacMath.

“I’ve got go talk to Zac," said Union coach John Hackworth. "He was pretty upset. The fact that he felt like that, I’m sure he felt like he could have gotten it. From the side, it definitely looked like he thought it was going wide. That’s our fault to give up a goal like that. If that’s the case we have to learn from our experiences, and Zac’s been fantastic for us all year. He’s a young goalkeeper and he’ll learn from that.”

Kansas City will be without all-star defender Aurelien Collin for the final on Aug. 8 against the Seattle Sounders. The Frenchman will be suspended after picking up his third yellow card of the tournament.

Sporting will be making its second U.S. Open Cup final appearance. In 2004, the club (then known as the Kansas City Wizards ) topped the Chicago Fire, 1-0, at Arrowhead Stadium on Igor Simutenkov's goal in 95th-minute golden goal.