CREATE TABLE table_name_33 (opponent VARCHAR, head_coach VARCHAR)
SELECT opponent FROM table_name_33 WHERE head_coach = "b. sathianathan"
คู่ต่อสู้เมื่อครั้งเฮดโค้ชคือ บี. เสถียรธาน?
Who was the opponent when the head coach was B. Sathianathan?