Houston:Brian Ching scored in the 50th minute as the Houston Dynamo beat DC United 1-0 on Wednesday to advance to the SuperLiga semifinals.
Houston meets Mexico's Pachuca in the semifinals on August 14. DC United needed a loss by Morelia against fellow Mexican team Club America later Wednesday to advance to a semifinal matchup at the Los Angeles Galaxy on August 15.
Ching took a pass from Nate Jaqua and scored from 16 meters.
Stuart Holden's shot from 14 meters, which hit a post in the 36th minute, was the closest either team came to scoring in the first half.
The teams were playing for the third time this season. In two Major League Soccer games, DC United won 2-1 in Washington and Dynamo won 1-0 in Houston.