CREATE TABLE table_name_19 (matches INTEGER, econ VARCHAR(255), wickets VARCHAR(255), best VARCHAR(255))
What are the lowest matches that have wickets greater than 16, 3/15 as the best, and an econ less than 8?
    
SQL: SELECT MIN(matches) FROM table_name_19 WHERE wickets > 16 AND best = "3/15" AND econ < 8