Chivas USA secure 1-0 home win against Seattle
It was Chivas USA's first win since May 9, after two ties and a loss in its last three games.
Lillingston's goal came on a rebound given up by Seattle goalkeeper Kasey Keller after a hard shot from midfielder Paulo Nagamura.
The Mexican striker now leads Chivas USA in goals, with five, putting him one ahead of Nagamura.
It was also Lillingston's third game-winning goal of 2009, good for the MLS lead in this category.