What round on average was a defensive tackle selected?
CREATE TABLE table_name_87 (round INTEGER, position VARCHAR)
SELECT AVG(round) FROM table_name_87 WHERE position = "defensive tackle"
### Context: CREATE TABLE table_name_87 (round INTEGER, position VARCHAR) ### Question: What round on average was a defensive tackle selected? ### Answer: SELECT AVG(round) FROM table_name_87 WHERE position = "defensive tackle"