With the win, the Fire advance to the Semifinals for the fourth year in a row. They also become the first club in the 103-year history of the US Open Cup to reach four straight Semifinals twice (2003-06, 2013-16).
Lletget tallied twice in the final five minutes as Los Angeles Galaxy came from behind to defeat the Seattle Sounders, 4-2, in a quarterfinal round game at the Track and Field stadium at StubHub Center.
Penalty kick shootouts generally turn into a battle of the goalkeepers. After 120 minutes of dazzling saves, Brad Knighton of the New England Revolution came out the winner, leading his team to a 4-2 penalty kick victory over the Philadelphia Union.
For the ninth time in team history, FC Dallas has reached the final four.