CREATE TABLE table_37080 ("Date" TEXT, "Tournament" TEXT, "Winning score" TEXT, "Margin of victory" TEXT, "Runner ( s )  up" TEXT)

What is the margin of victory for PGA Championship?
SELECT "Margin of victory" FROM table_37080 WHERE "Tournament" = 'pga championship'
SELECT "Margin of victory" FROM "table_37080" WHERE "Tournament" = 'pga championship'