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"