New York Red Bulls coach Hans Backe, left, and Thierry Henry leave the field after their MLS Eastern Conference semifinal playoff soccer match against DC United was postponed, Wednesday, Nov. 7, 2012, in Harrison, N.J. (AP Photo/Bill Kostroun)

DC United forward Chris Pontius walks onto the field after their MLS Eastern Conference semifinal playoff soccer match against the New York Red Bulls was postponed, Wednesday, Nov. 7, 2012, in Harrison, N.J. (AP Photo/Bill Kostroun)

A message detailing the postponement of the New York Red Bulls-DC United MLS Eastern Conference semifinal playoff soccer match appears at the field, Wednesday, Nov. 7, 2012, in Harrison, N.J. (AP Photo/Bill Kostroun)

DC United players take the field to thank their fans after their MLS Eastern Conference semifinal playoff soccer match against the New York Red Bulls was postponed, Wednesday, Nov. 7, 2012, in Harrison, N.J. (AP Photo/Bill Kostroun)

Workers attempt to clear the snow from the field before the New York Red Bulls' MLS Eastern Conference semifinal playoff soccer match against DC United was postponed, Wednesday, Nov. 7, 2012, in Harrison, N.J. (AP Photo/Bill Kostroun)

New York Red Bulls defender Markus Holgersson controls the ball in front of DC United forward Lionard Pajoy (26) ad Branko Brskovic (8) during the first half of an MLS Eastern Conference semifinal playoff soccer game on Thursday, Nov. 8, 2012, in Harrison, N.J. (AP Photo/Bill Kostroun)

DC United midfielder Nick DeLeon, top, leaps over New York Red Bulls defender Rafa Marquez, bottom, during the first half of an MLS Eastern Conference semifinal playoff soccer game on Thursday, Nov. 8, 2012, in Harrison, N.J. (AP Photo/Bill Kostroun)

New York Red Bulls midfielder Tim Cahill, right front, lands on DC United midfielder Branko Boskovic as Red Bulls midfielder Teemu Tainio, right rear, looks on during the first half of an MLS Eastern Conference semifinal playoff soccer game on Thursday, Nov. 8, 2012, in Harrison, N.J. (AP Photo/Bill Kostroun)

New York Red Bulls midfielder Tim Cahill, right, pushes DC United midfielder Branko Boskovic during the first half of an MLS Eastern Conference semifinal playoff soccer match, Thursday, Nov. 8, 2012, in Harrison, N.J. (AP Photo/Bill Kostroun)

DC United midfielder Nick DeLeon, left,celebrates at the end of the MLS Eastern Conference semifinal playoff soccer game as New York Red Bulls midfielder Teemu Tainio (6) and goalkeeper Luis Robles react on Thursday, Nov. 8, 2012, in Harrison, N.J. DeLeon scored the only goal of the game as DC United defeated the Red Bulls 1-0 to advance to the next round. (AP Photo/Bill Kostroun)

New York Red Bulls forward Kenny Cooper, right, sails over DC United goalkeeper Bill Hamid during the second half of an MLS Eastern Conference semifinal playoff soccer game on Thursday, Nov. 8, 2012, in Harrison, N.J. DC United defeated the Red Bulls 1-0 to advance to the next round. (AP Photo/Bill Kostroun)

DC United goalkeeper Bill Hamid, right, makes a save on a shot by New York Red Bulls midfielder Dax McCarty during the second half of an MLS Eastern Conference semifinal playoff soccer game on Thursday, Nov. 8, 2012, in Harrison, N.J. DC United defeated the Red Bulls 1-0 to advance to the next round. (AP Photo/Bill Kostroun)

DC United midfielder Nick DeLeon celebrates at the end of the MLS Eastern Conference semifinal playoff soccer game as New York Red Bulls goalkeeper Luis Robles looks on Thursday, Nov. 8, 2012, in Harrison, N.J. DeLeon scored the only goal of the game as DC United defeated the Red Bulls 1-0 to advance to the next round. (AP Photo/Bill Kostroun)

New York Red Bulls forward Kenny Cooper, left, battles for control of the ball with DC United defender Dejan Jakovic during the second half of an MLS Eastern Conference semifinal playoff soccer game on Thursday, Nov. 8, 2012, in Harrison, N.J. DC United defeated the Red Bulls, 1-0 to advance to the next round. (AP Photo/Bill Kostroun)