ใครเล่นบนดินเหนียวและมีคะแนน 6–1 7–6?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
Who played on clay and had a score of 6–1 7–6?It is not neccessary to use all the tables.
 table_name_31:  (opponent [ VARCHAR ] surface [ VARCHAR ] score [ VARCHAR) ]
SELECT opponent FROM table_name_31 WHERE surface = "clay" AND score = "6–1, 7–6"