What tournament did Smeets play against Mark nielsen?
CREATE TABLE table_name_11 (tournament VARCHAR, opponent_in_the_final VARCHAR)
SELECT tournament FROM table_name_11 WHERE opponent_in_the_final = "mark nielsen"
### Context: CREATE TABLE table_name_11 (tournament VARCHAR, opponent_in_the_final VARCHAR) ### Question: What tournament did Smeets play against Mark nielsen? ### Answer: SELECT tournament FROM table_name_11 WHERE opponent_in_the_final = "mark nielsen"