 Complete the following phrase:  Seattle Sounders FC has played in Major League Soccer since 2009, sharing Lumen Field with the Seahawks, as a continuation of earlier teams in the lower divisions of American soccer. The team set various attendance records in its first few seasons, averaging over 43,000 per match and placing themselves among the top 30 teams internationally. The Sounders have won the MLS Supporters Shield in 2014 and the U.S. Open Cup on four occasions: 2009, 2010, 2011, and 2014. The Sounders won their first MLS Cup after defeating Toronto FC 54 in a penalty shootout, in MLS Cup 2016; the team would go on to finish as runners-up to Toronto FC in the following cup. Lumen Field hosted the 2009 MLS Cup, played between Real Salt Lake and the Los Angeles Galaxy in front of 46,011 spectators. The Sounders would play their first MLS Cup at Lumen Field in 