CREATE TABLE table_27877656_7 (edition VARCHAR2, outcome VARCHAR2, score VARCHAR2)

For score 6 2, 6 3 and outcome is loser mention all the edition.
SELECT edition FROM table_27877656_7 WHERE outcome = "Loser" AND score = "6–2, 6–3"
SELECT "edition" FROM "table_27877656_7" WHERE "6–2, 6–3" = "score" AND "Loser" = "outcome"