คู่ต่อสู้คนใดที่อยู่ในรายการก่อนหน้า j rgen fassbender ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
which opponent is listed previous to j rgen fassbender ?It is not neccessary to use all the tables.
 table_204_520:  id [ number]  "outcome" [ text]  "no." [ number]  "date" [ number]  "championship" [ text]  "surface" [ text]  "opponent" [ text]  "score" [ text] 
SELECT "opponent" FROM table_204_520 WHERE id = (SELECT id FROM table_204_520 WHERE "opponent" = 'jurgen fassbender') - 1