CREATE TABLE table_4427 ("Outcome" TEXT, "Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Partner" TEXT, "Opponents" TEXT, "Score" TEXT)

Tell me the opponents for mashona washington november 21, 2009
SELECT "Opponents" FROM table_4427 WHERE "Partner" = 'mashona washington' AND "Date" = 'november 21, 2009'
SELECT "Opponents" FROM "table_4427" WHERE "Date" = 'november 21, 2009' AND "Partner" = 'mashona washington'