Referee Sorin Stoica, center, separates players after a head-butting incident involving Real Salt Lake defender Kenny Mansally (29) and D.C. United midfielder Perry Kitchen (23) in the second half at RFK Stadium in Washington, D.C., Saturday, March 9, 2013. Kitchen confronted Marsally, after Marsally delivered a hit on D.C. United forward Chris Pontius (13), left, on the pitch. United defeated RSL, 1-0.
Columbus Crew midfielder Wil Trapp (20) fights for the ball with D.C. United midfielder Perry Kitchen (23) during the first half of their game at Columbus Crew Stadium on April 19, 2014 in Columbus, Ohio.
Perry Kitchen #15 and Matt Hedges #3 of the USA move the defensive line forward as Anibal Godoy #20 and Ismael Diaz #22 of Panama look on during the international men's friendly match at StubHub Center on February 8, 2015 in Los Angeles, California. The USA defeated Panama 2-0.