Houston Dynamo FC connects to Seattle Sounders FC in 2 degrees through shared players and coaching. First, Houston Dynamo FC links to Columbus Crew via shared players: Kei Kamara played for both Columbus Crew and Houston Dynamo FC Finally, Columbus Crew links to Seattle Sounders FC via coaching: Sigi Schmid managed Columbus Crew (2006–2008) and Seattle Sounders FC (2009–2016).