CREATE TABLE table_27877656_7 (outcome VARCHAR2, score VARCHAR2)

For score 7 6 (7 3) , 6 4 please mention total number of outcome
SELECT COUNT(outcome) FROM table_27877656_7 WHERE score = "7–6 (7–3) , 6–4"
SELECT COUNT("outcome") FROM "table_27877656_7" WHERE "7–6 (7–3) , 6–4" = "score"