MLS Soccer Sunday packs a punch this week with three action-packed matches set to air on national television back-to-back. The non-stop soccer begins when Seattle Sounders FC travel to take on the highest scoring team in the league in Houston Dynamo at BBVA Compass Stadium (1 p.m. PT, ESPN/ESPN Deportes). Action then swings over to FS1 for the first of a double-header as Chicago Fire takes on New York City FC at Yankee Stadium (4 p.m. PT, FS1/FOX Deportes), followed by a must-see tilt at StubHub Center between the two previous MLS Cup champions: Portland Timbers and LA Galaxy (6:30 p.