PORTLAND, Ore. – Portland Thorns FC head coach Mark Parsons is under no illusion when he says, of his team’s game on Saturday, “of course, it's a must-win.” He knows his team has already qualified for the National Women’s Soccer League’s 2019 postseason, and he knows, because of a format that grants playoff home games to only the league’s two top finishers, Portland will be on the road 11 days from now. No matter Saturday’s result against the visiting Washington Spirit (7:30pm PT, TICKETS, Yahoo! Sports), Portland can finish no higher than third in the regular season.