CREATE TABLE table_16121 ("Year" FLOAT, "Division" FLOAT, "League" TEXT, "Regular Season" TEXT, "Playoffs" TEXT, "Open Cup" TEXT)

what's the league where regular season is 2nd, northwest
SELECT "League" FROM table_16121 WHERE "Regular Season" = '2nd, Northwest'
SELECT "League" FROM "table_16121" WHERE "Regular Season" = '2nd, Northwest'