ตั้งชื่อแชมป์พื้นผิวแข็ง 7–5 6–4 ไม่จำเป็นต้องใช้ทุกโต๊ะ
Name the championship for hard surface 7–5 6–4It is not neccessary to use all the tables.
 table_24638867_6:  (championship [ VARCHAR ] score [ VARCHAR ] surface [ VARCHAR) ]
SELECT championship FROM table_24638867_6 WHERE score = "7–5, 6–4" AND surface = "Hard"