CREATE TABLE table_name_18 (events INT, tournament VARCHAR, top_5 VARCHAR)

What is the average event for the Open Championship Tournament, and a Top-5 less than 1?
SELECT AVG(events) FROM table_name_18 WHERE tournament = "the open championship" AND top_5 < 1
SELECT AVG("events") FROM "table_name_18" WHERE "the open championship" = "tournament" AND "top_5" < 1