Griffin Dorsey scored the decisive penalty to give the Houston Dynamo a 4-3 shootout victory over Real Salt Lake, after the two sides played out a 1-1 draw in the rubber match of the first-round MLS Cup series on Saturday. The Dynamo will advance to the Western Conference semi-finals. Houston, the fourth seed in the West, will play No 8 seed Sporting Kansas City in the conference semi-finals. The second-seeded Seattle Sounders host defending champion and No 3 seed Los Angeles FC in the other semi-final. Houston took a 1-0 lead into half-time when Corey Baird took a pass from Héctor Herrera and scored in the 28th minute. It was the first career postseason goal for Baird, who spent his first three seasons in the league with Real Salt Lake. Diego Luna scored the equalizer for Real Salt Lake in the 65th minute to score, with assists from Bryan Oviedo and Braian Ojeda. Both of Luna’s two career postseason goals came in this series. Luna and Danny Musovski, who entered in the 90th, misfired for Real Salt Lake in the shootout. Adalberto Carrasquilla, Thorleifur Úlfarsson and Amine Bassi scored the other shootout goals for the Dynamo. Goalkeeper Steve Clark finished with two saves in regulation play for the Dynamo. Zac MacMath saved four shots in regulation for RSL. Houton improves to a league-best 10-1-5 in all competitions since the Leagues Cup break. Real Salt Lake finished the season with 11 road wins in all competitions. Only the Los Angeles Galaxy, with 13 in 1998, had more wins away from home in a calendar year.