Sporting Kansas City have nabbed top spot in the MLS Eastern Conference with a dramatic 2-1 win over Philadelphia Union at PPL Park.

Peter Vermes men, who had already qualified for the end-of-season playoffs, now lead New York Red Bull by a point, but Mike Petke's side take on Chicago Fire in their final match tomorrow.

Jack McInerney looked like he had salvaged a point for the home side in the 87th minute, after Graham Zusi had headed past Jimmy Nielsen from Lawrence Olum's flick on just after the break.

However, Olum pounced inside the box to break Union hearts, ending any hope that they had of reaching the playoffs, as they trail New England Revolution by two points with their fixture list completed.

The Revs are now vying with Montreal Impact, Chicago Fire and Houston Dynamo with three of the five playoff-spot still available.