D.C. United, which was invited to take part in the Copa Sudamericana by virtue of its third-place finish in this year's CONCACAF Champions Cup, will enter the Copa in the round of 16 and face Mexico's Chivas Guadalajara. It was Chivas that eliminated D.C. United in this year's Champions Cup semifinal (3-2 on aggregate). In 2005, D.C. United was the first MLS team to participate Copa Sudamericana. It lost in the round of 16, 4-3 on aggregate to Universidad Catolica of Chile.

United hosts Chivas in the first leg Sept.11. The return leg is Oct. 4.

"Playing Chivas again in a meaningful competition is an ideal scenario for us," said United coach Tom Soehn. "We played them very close over a similar two-game format during our preseason and we feel that we have unfinished business to tend to with them."

Thirty-four teams compete in the Copa Sudamericana, which started inviting CONCACAF teams in 2005.

Click HERE for the Copa Sudamericana schedule