Who did he fight in Rumble of the Kings 6?
CREATE TABLE table_name_87 (opponent VARCHAR, event VARCHAR)
SELECT opponent FROM table_name_87 WHERE event = "rumble of the kings 6"
### Context: CREATE TABLE table_name_87 (opponent VARCHAR, event VARCHAR) ### Question: Who did he fight in Rumble of the Kings 6? ### Answer: SELECT opponent FROM table_name_87 WHERE event = "rumble of the kings 6"