WASHINGTON, DC - MARCH 07: Chris Korb #22 of D.C. United heads the ball in front of Justin Mapp #21 of Montreal Impact during the first half at RFK Stadium on March 7, 2015 in Washington, DC. (Photo by Rob Carr/Getty Images)
WASHINGTON, DC - MARCH 07: Chris Korb #22 of D.C. United heads the ball in front of Justin Mapp #21 of Montreal Impact during the first half at RFK Stadium on March 7, 2015 in Washington, DC. (Photo by Rob Carr/Getty Images)