The 1940 PGA Championship presented that all past champions are from the United States wherein Walter Hagen had the most number of wins while Henry Picard and Johnny Revolta only won once.
Paul Runyan United States 1934, 1938 Gene Sarazen United States 1922, 1923, 1933 Walter Hagen United States 1921, 1924,
1925, 1926, 1927 Henry Picard United States 1939 Johnny Revolta United States 1935 Denny Shute United States 1936, 1937 
