CREATE TABLE table_56601 ("Season" TEXT, "Club" TEXT, "League" TEXT, "Apps." FLOAT, "Goals" FLOAT)

What are the average apps for the Major League Soccer team club for the Seattle Sounders FC that has goals less than 0?
SELECT AVG("Apps.") FROM table_56601 WHERE "League" = 'major league soccer' AND "Club" = 'seattle sounders fc' AND "Goals" < '0'
SELECT AVG("Apps.") FROM "table_56601" WHERE "Club" = 'seattle sounders fc' AND "Goals" < '0' AND "League" = 'major league soccer'