CREATE TABLE table_71590 ("Outcome" CLOB, "Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Opponent" CLOB, "Score" CLOB)

On what day was the score of 1 6 6 1 3 6 achieved?
SELECT "Date" FROM table_71590 WHERE "Score" = '1–6 6–1 3–6'
SELECT "Date" FROM "table_71590" WHERE "Score" = '1–6 6–1 3–6'