CREATE TABLE table_29163303_4 (opponent VARCHAR2, score VARCHAR2)

How many times has the score been 6 4, 3 6, [11 13]?
SELECT COUNT(opponent) FROM table_29163303_4 WHERE score = "6–4, 3–6, [11–13]"
SELECT COUNT("opponent") FROM "table_29163303_4" WHERE "6–4, 3–6, [11–13]" = "score"