Jordan Morris and Paul Rothrock scored as the Seattle Sounders celebrated their 50th anniversary with a 2-0 victory against visiting Minnesota United in an MLS match Saturday night. Stefan Frei didn't have to make a save in posting the shutout for the Sounders (5-7-6, 21 points), who improved to 12-1-2 in their all-time series against the Loons -- including 8-0-0 at Lumen Field. The Sounders opened the scoring in the 28th minute.