SELECT AVG("Wins") FROM table_43022 WHERE "Tournament" = 'pga championship' AND "Top-5" < '2'
What is the average number of Wins in a PGA Championship with a Top-5 less than 2?
CREATE TABLE table_43022 (
    "Tournament" text,
    "Wins" real,
    "Top-5" real,
    "Top-10" real,
    "Top-25" real,
    "Events" real,
    "Cuts made" real
)