CREATE TABLE table_14786 ("Tournament" TEXT, "Wins" FLOAT, "Top-5" FLOAT, "Top-10" FLOAT, "Top-25" FLOAT, "Events" FLOAT, "Cuts made" FLOAT)

What is the average number of events of PGA Championship tournaments with a top-5 less than 0?
SELECT AVG("Events") FROM table_14786 WHERE "Top-10" = '0' AND "Tournament" = 'pga championship' AND "Top-5" < '0'
SELECT AVG("Events") FROM "table_14786" WHERE "Top-10" = '0' AND "Top-5" < '0' AND "Tournament" = 'pga championship'