CREATE TABLE table_57771 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "TV Time" TEXT, "Attendance" TEXT)

Name the least week for opponent of washington redskins
SELECT MIN("Week") FROM table_57771 WHERE "Opponent" = 'washington redskins'
SELECT MIN("Week") FROM "table_57771" WHERE "Opponent" = 'washington redskins'