CREATE TABLE table_name_21 (date VARCHAR, tournament VARCHAR, score VARCHAR)

What day was the score for tournament of alcoba a 6 3, 2 6, 7 5?
SELECT date FROM table_name_21 WHERE tournament = "alcobaça" AND score = "6–3, 2–6, 7–5"
SELECT "date" FROM "table_name_21" WHERE "6–3, 2–6, 7–5" = "score" AND "alcobaça" = "tournament"