Stephen Laybutt ผู้พิทักษ์เปิดตัวรอบใด?ไม่จำเป็นต้องใช้ตารางทั้งหมด
What round was the debut of defender Stephen Laybutt?It is not neccessary to use all the tables.
 table_name_11:  debut [ VARCHAR]  position [ VARCHAR]  name [ VARCHAR] 
SELECT debut FROM table_name_11 WHERE position = "defender" AND name = "stephen laybutt"