พื้นผิวของคู่ต่อสู้ Marcos Baghdatis คืออะไร?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
What was the surface for the opponent Marcos Baghdatis?It is not neccessary to use all the tables.
 table_50980:  "Outcome" [ text]  "Date" [ text]  "Championship" [ text]  "Surface" [ text]  "Opponent" [ text]  "Score" [ text] 
SELECT "Surface" FROM table_50980 WHERE "Opponent" = 'marcos baghdatis'