Table schema:
CREATE TABLE table_name_19 (scoring_rank VARCHAR, year VARCHAR, events_played VARCHAR, rank VARCHAR)

Question: What is the Scoring rank when there are less than 21 events played with a rank of n/a in years less than 2011?
SQL: SELECT scoring_rank FROM table_name_19 WHERE events_played < 21 AND rank = "n/a" AND year < 2011