SEATTLE -- The Seattle Sounders and Head Coach Sigi Schmid announced Tuesday they've mutually parted ways.

It is an abrupt end for the only coach in Sounders FC history.

Since 2009, Schmid has led the franchise to the second best winning percentage in Major League Soccer, and won four US Open Cup titles, the MLS Supporters Shield and seven consecutive MLS Cup Playoff appearances.

However, this year, the squad has appeared sluggish, and appeared to wilt in the heat in a defeat in Kansas City. The Sounders sit a point off the bottom of the Western Conference standings, and will need some significant breaks to keep their playoff string intact.

"Sigi departs the club with our utmost respect and gratitude for his years of service. Ultimately the club and Sigi agreed that a change was needed at this time, but Sigi's legacy will always be a part of our history. He has my sincere appreciation for all that he committed to our team and community," said Sounders FC Owner Adrian Hanauer in a release.

The Sounders named former Sounders USL Coach Brian Schmetzer as interim Head Coach of the MLS squad. He's been the Sounders FC's top assistant coach since the inception of the franchise.