CREATE TABLE table_42615 ("Tournament" TEXT, "Wins" FLOAT, "Top-5" FLOAT, "Top-10" FLOAT, "Top-25" FLOAT, "Events" FLOAT, "Cuts made" FLOAT)

What are the least Top-5 finish when the events are greater than 18?
SELECT MIN("Top-5") FROM table_42615 WHERE "Events" > '18'
SELECT MIN("Top-5") FROM "table_42615" WHERE "Events" > '18'