Houston Dynamo have jumped above Philadelphia Union and into a playoff spot in the MLS Eastern Conference courtesy of Ricardo Clark's goal at PPL Park.

The 30-year-old midfielder scored the only goal of the game when he got his head to Brad Davis's free kick in the 53rd minute.

Conor Casey had already wasted two brilliant chances to put the home side in front, which proved to be costly for John Hackworth's team.

The Union will now be looking over their should as they sit three points ahead of Chicago Fire having played one game more.

Meanwhile, the visitors Houston have drawn level on 40 points with New England Revolution, although they are currently involved in a match against the Fire at Toyota Park.