[MLS] One team's satisfaction is another team's misery, and when two strugglers meet, somebody has to suffer.  The homefield advantage hasn't been much help to D.C. United in 2010, and on Thursday it succumbed at RFK Stadium to a late goal by Seattle's Roger Levesque, his first of the season, in a 1-0 loss.

Levesque headed home a cross from Fredy Montero, who had evaded Jordan Graye on the flank, in the 89th minute to up the Sounders perfect record against D.C. at RFK to 3-0-0 in all competitions. With the win, Seattle snapped a four-game winless streak in league play.

United fans waved signs and flags in tribute to defender Bryan Namoff, who has suspended his career while he recovers from a concussion suffered last September against Seattle. Namoff has not played this season and will serve as an assistant coach while he contemplates whether to continue his playing career.

Keeper Kasey Keller denied D.C. United on scoring opportunities for Andy Najar early in the match and a deflected shot by Adam Cristman in the final minutes. Defender Pat Ianni, pressed into starting duty by an season-ending injury suffered by Jhon Kennedy Hurtado, cleared a Santino Quaranta shot off the goal line as Keller lay writhing in pain outside the penalty area from an attempted clearance.

A strong tackle by United defender Dejan Jakovic thwarted a good chance for Steve Zakuani, and the game looked destined to end goalless until Levesque arrived at the back post to head in Montero's cross.

Two players debuted for United in the second half. Forward Pablo Hernandez replaced Jaime Moreno, and Designated Player Branko Boskovic took over for Stephen King in midfield. Boskovic’s international transfer certificate was received by United on Thursday morning after prolonged communications with his former club, Rapid Vienna, and the Austrian soccer federation.

United (3-10-3) hosts the Galaxy Sunday. Seattle (5-8-4) heads home to play Scottish club Glasgow Celtic in an exhibition, also on Sunday, and returns to league play July 25 at home against Colorado.

July 15 in Washington, D.C.
D. C. United 0, Seattle 1. Goal: Levesque (Montero, Nyassi) 89.
D.C. United -- Perkins, McTavish (Cristman, 81), Jakovic, James , Graye, Najar, King (Boskovic, 72), Simms , Pontius , Moreno (Hernandez, 56), Quaranta.
Seattle -- Keller, Riley, Parke ( Marshall , 62), Ianni, Gonzalez , Noonan (Nyassi, 88), Sturgis , Seamon ( Alonso , 73), Zakuani, Levesque, Montero.
Referee: Alex Prus
Att.: 13,716