Seattle Sounders FC is a Major League Soccer team, sanctioned by the United States Soccer Federation, based in Seattle, Washington with origins that go back to the 1970s and the North American Soccer League.

Inception Even before the first cities in the United States were chosen to host Major League Soccer teams, Seattle was considered a viable location for a professional team. In 1994, as the U.S. was preparing to host the FIFA World Cup, more than 30 cities were pursuing the rights to an MLS team, Seattle being among them. However, despite the strong soccer fan base in Seattle, the absence of a soccer-only stadium was a drawback to establishing an MLS team. Cities seeking consideration for an inaugural MLS team were also expected to secure 10,000 assurances from fans for season tickets. By the June 3, 1994 deadline for MLS team bids, Seattle's soccer organizers had secured fewer than 1,500 such assurances. These low numbers were a result of competition between the ticket campaign for the MLS expansion team and for the American Professional Soccer League (APSL) Sounders expansion team.

In a June 14, 1994 announcement, Seattle was not included among the first seven cities to be awarded an MLS team. Five more teams were to be announced later in the year, and to improve their chances this time, the city's soccer organizers began working with the University of Washington to secure use of Husky Stadium as an interim stadium while they pursued the construction of a permanent soccer-specific facility. In November 1994, the start of the first MLS season was postponed until 1996, and it was noted that the absence of an "adequate grass-field facility" in the area and the presence of the new APSL Seattle Sounders team had thwarted Seattle's MLS bid. In the end, Seattle was not among the cities chosen to establish a team during the first season of MLS.

In 1996, as Seattle Seahawks owner Paul Allen worked with the city to build a new football stadium for his team, the potential of an MLS expansion team that could be a co-tenant helped drive public support for the effort. Many of the state's voters supported the referendum to construct Seahawks Stadium because it was also expected to be a professional soccer venue. While the stadium problem was being resolved, a new issue emerged. By 2000, MLS was moving away from league-operated teams to investor-operated teams, so wealthy individuals would need to step forward for Seattle to obtain an MLS expansion team.

In 2003, Seattle was again listed as a possibility for an MLS expansion team when the ten-team league announced plans to expand into new markets. In 2004, MLS commissioner Don Garber indicated that Seattle had been "very close" to receiving the expansion team ultimately awarded to Salt Lake. Adrian Hanauer, then-owner of the United Soccer League's (USL) Sounders (formerly the APSL Sounders), was in discussions with MLS about an estimated payment of $1 million to secure rights to a Seattle franchise for 2006. However, when Seattle was passed over again in 2006, Hanauer announced that he would not be able to secure an expansion team without the help of more investors willing to cover the increasing MLS franchise fees which had grown beyond $10 million.

MLS expansion arrives In 2007, Hanauer teamed up with Hollywood producer Joe Roth to make another bid for MLS expansion into Seattle, at a cost of $30 million. Paul Allen, whose First and Goal company operated Qwest Field (now Lumen Field), joined the ownership group that same year, making the bid the most promising yet for Seattle. During the first week of November 2007, rumors began to build that MLS would be announcing an expansion into Seattle the following week, and that the ownership group had taken on a fourth member, TV personality Drew Carey. In a press conference on November 13, 2007, it was announced that Seattle had been awarded an expansion team. The announcement marked the return of top-level soccer to Seattle for the first time since the dissolution of its North American Soccer League (NASL) team in 1983. The announcement also meant that the Seattle Sounders of the USL First Division would play its final season the year before the new MLS franchise was formed.

Team name, badge and colors unveiled Fans chose a name for the team in an online poll held between March 27 and 31, 2008. The initial list of possibilities – Seattle FC, Seattle Republic and Seattle Alliance – deliberately did not include Seattle Sounders in order to provide a "fresh start". Despite the names having been selected through fan research and internal committees, the omission of the traditional Sounders name embittered many in the Seattle community. In response to the backlash, the team added a fourth "write-in" option for the team name, allowing for any name to be suggested on the ballot. Of the more than 14,500 votes received in choosing the new team name, 49% of the votes included some form of the name "Sounders". Upon announcing the name of the club, Hanauer acknowledged the significance of keeping with tradition: "The team playing at the highest level in our region has always been called Sounders. Starting with the NASL and then the USL 1st Division, we now have the chance to create a separate and distinct identity with the new MLS team."

"Seattle Sounders FC" was announced as the team name on April 7, 2008, along with the team logo, colors and badge design, in a presentation held at the Space Needle. The "FC" in the team moniker stands for Football Club, but the team name is officially "Seattle Sounders FC". The badge design resembles a heraldic shield, and consists of two layers which represent "the partnership between the ownership, the community, the players and the fans." The logo incorporates the Space Needle, an internationally recognized Seattle landmark. The official team colors are Sounder Blue, signifying the waters of the Puget Sound; Rave Green, representing the forests of the Pacific Northwest; and Cascade Shale, representing the Cascade Range to the east of Seattle.

Team ownership revealed the first Sounders FC jersey on May 28, 2008, and announced Microsoft as the team's sponsor in a five-year deal worth approximately $20 million. As part of the agreement, the Xbox 360 and Xbox Live brands appear on the front of Sounders FC jerseys and throughout the stadium.

Sigi Schmid era (2009–2016)

2009: Inaugural MLS Campaign

The Sounders began their inaugural MLS campaign during the 2009 MLS season. Prior to the opening match, the Sounders sold all 22,000 of their season ticket packages. The 22,000 ticket holders, gave the Sounders a record for the most season ticket holders ever in MLS history. They played their first home match on March 19, 2009, to a sold-out crowd of 32,523, defeating the 2008 MLS Cup runners-up, New York Red Bulls, by a 3–0 margin. Seattle was the first MLS expansion team to win their first three games, and they did so with a shutout in each. Fredy Montero scored the first regular season goal in team history, finishing a movement from Sebastien Le Toux and Osvaldo Alonso in the 12th minute. Montero assisted Brad Evans' goal, and also scored the team's third goal. Kasey Keller, a veteran American goalkeeper who had played his entire career abroad, made his MLS debut at 39 years of age, and made two saves to register the team's first regular season shutout.

March 2009 saw Montero winning Player of the Week honors for week 1 and Keller for week 2. Montero won Goal of the Week for the first two games and was named the Player of the Month.

After their first two victories at home, Sounders FC played their MLS away fixture against Toronto FC. The Sounders expected a challenging away environment, but were victorious in a 2–0 shutout. Soon after, reports out of Seattle linked Montero to a sexual assault case with an unidentified woman. In a statement made by Sounders publicist, Montero asserted that the allegations stemmed from a disagreement in which he sought to end the relationship. and a police inquiry resulted in no charges being filed. Seattle Sounders FC suffered their first competitive loss at home against the Kansas City Wizards. Kasey Keller was sent off in the 29th minute for a handball outside the 18-yard box, as the Sounders fell 1–0 to the Wizards. The following week they lost at Chivas USA. Chris Eylander was scored on twice while covering the goal during Keller's suspension. The Sounders again failed to score.

The Sounders returned to their winning ways in a 2–0 home win versus the San Jose Earthquakes.

It was announced in early July that the Sounders had signed left-footed Costa Rican defender Leonardo González to help at the left back position. The position had been a weak spot in Seattle's defense and filled by three separate players throughout the season.

On July 11, the Sounders hosted the Houston Dynamo at Qwest Field. Brian Schmetzer filled in for Schmid who was at his son's wedding. Ianni scored his first goal of the season on bicycle kick that would earn him the MLS goal of the Week. On the following Tuesday, the Sounders defeated the Dynamo at Strfire in the U.S. Open Cup semifinals. Houston led when Jaqua scored in the 89th minute. King scored a goal five minutes into extra time, thus sending the Sounders FC to the Open Cup finals against D.C. United.

On July 18, 2009 the Seattle Sounders lost 0–2 in a friendly with Chelsea. All sections of the stadium were open and sold out with a crowd of 65,289 in attendance. The game was the first with the team for Chelsea's new manager, Carlo Ancelotti, and their new forward Daniel Sturridge.

The club set a state record for attendance at a soccer match on August 5, 2009, when 66,848 attended a friendly match with FC Barcelona.

On September 2, 2009, Sounders FC became the second MLS expansion team in league history (Chicago was first) to win the U.S. Open Cup tournament in their first season. They did so by defeating D.C. United 2–1 on the road at RFK Stadium. In winning the U.S. Open Cup tournament, they qualified for the preliminary round of the 2010–11 CONCACAF Champions League.

On October 17, 2009, Sounders FC became the second MLS expansion team in league history (again, Chicago had been first) to qualify for the playoffs in their first season. They clinched a playoff berth with a come-from-behind victory over the Kansas City Wizards 3–2 at Kansas City. Seattle finished the regular season with a record of 12 wins, 7 losses, and 11 ties. The club set a new MLS record for average attendance at 30,943 fans per game. Their inaugural season came to an end in the 2009 MLS Cup Playoffs when they lost in the conference semifinals to the Houston Dynamo with a 1–0 aggregate score in a two-legged series. During the 2009 season, all 15 Sounders FC MLS regular season home matches, their home playoff match, and their 4 home U.S. Open Cup matches (played at the Starfire Sports Complex) were sold out.

First U.S. Open Cup Title

During the Sounders FC first season in MLS, the club won their first ever U.S. Open Cup title, including any past Sounders franchise. The team was also the first club in modern Open Cup history to win the tournament after playing through a string of qualification propers to enter at the third round proper.

Prior to their first qualification match against Real Salt Lake, Schmid asserted that the Open Cup was extremely critical to the club and that they were playing to win. One of the reasons the club cited, was the opportunity to qualify into the CONCACAF Champions League upon winning the Open Cup title. Sounders FC played U.S. Open Cup home games at the Starfire Sports Complex in Tukwila, Washington. The facility is older and smaller than the club's home stadium for league matches, Qwest Field, but Sounders FC representatives preferred the atmosphere at Starfire for smaller cup matches.