CHIVAS USA (5-7-5 in MLS)AT SOUNDERS FC (8-5-6 in MLS)7 p.m., Starfire Sports Stadium, Tukwila.Broadcast: 97.3 FM, streamed at SoundersFC.com.HEAD TO HEAD: Seattle beat Chivas in the 2010 semifinal, 3-1. In MLS, the clubs played to a 1-1 draw on May 26 in Carson, Calif. Seattle visits there again on Aug. 25, while the Goats visit CenturyLink Field on Sept. 8. NOTES: This is a semifinal match of the 99th U.S. Open Cup, the oldest annual team tournament in the United States. It is open to all amateur and professional clubs affiliated with U.S. Soccer. … The Sounders have won the last three Open Cup titles. No club has won four in a row. … Seattle has never lost in 17 Open Cup matches, outscoring opponents by a combined 39-9. … Seattle advanced with wins over Atlanta, Cal FC and San Jose. The Goats defeated Ventura County, Carolina and Charlotte. … Chivas forward Jose Correa, 19, was named Open Cup player of the quarterfinal round. Also playing for Chivas is former Sounders defender James Riley. … In the other semifinal, Sporting Kansas City visits Philadelphia at 4:30 p.m. … If the Sounders advance, the final will be held Aug. 8, with Seattle either visiting SKC or Philadelphia visiting CenturyLink. … The game is sold out.QUOTABLE: “They don’t give up much. They haven’t scored much, either. The game gets bogged down in midfield at times because of their play. But also they’re a very good passing team and a very good technical team. It’s going to be a tight game as a result of just how they play defensively.” – Sounders coach Sigi Schmid on Chivas.NEXT: The Sounders return to MLS play 1 p.m. Sunday at New York.