หากวันที่ 7-21-2549 คู่ต่อสู้คือใคร?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
If the date is 7-21-2006, who was the opponent?It is not neccessary to use all the tables.
 table_25957:  "Edition" [ text]  "Round" [ text]  "Date" [ text]  "Against" [ text]  "Surface" [ text]  "Opponent" [ text]  "Result" [ text]  "Outcome" [ text] 
SELECT "Opponent" FROM table_25957 WHERE "Date" = '7-21-2006'