The Philadelphia Union make their first-ever Major League Soccer playoff appearance this Sunday when they host the Houston Dynamo at 5 p.m. (ESPN2) at PPL Park in Chester, Pa., in the first of two legs in the quarterfinal round.

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The winner is determined by total goals over the two matches, and the second game is away next Thursday at Roberston Stadium in Houston at 8:30 p.m. Eastern time.

On Wednesday, Press of Atlantic City soccer blogger James Clark joined KYW's Greg Orlandini, the Philadelphia Daily News' Kerith Gabriel and Philly Soccer Page's Eli Pearlman-Storch to preview the two-game series. Click on "KYW Philly Soccer Show podcast" parts 1, 2 and 3 in related links to listen.

And, make sure you visit James Clark's Soccer blog on Sunday morning for a preview of the Union's playoff opener. Don't forget to follow "James Clark's Soccer Blog" on Facebook for all the latest news from the "beautiful game."

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