CREATE TABLE table_name_31 (opponent VARCHAR, surface VARCHAR, score VARCHAR)
SELECT opponent FROM table_name_31 WHERE surface = "clay" AND score = "6–1, 7–6"
ใครเล่นบนดินเหนียวและมีคะแนน 6–1, 7–6?
Who played on clay and had a score of 6–1, 7–6?