| Western Open |
| TORNEO MASCHILE |
| 1899 |
Willie SMITH (SCO) |
Glen View - Golf (Illinois) |
| 1900 |
non disputato |
| 1901 |
Laurie AUCHTERLONIE (SCO) |
Midlothian - Midlothian (Illinois) |
| 1902 |
Willie ANDERSON (SCO) |
Euclid - Cleveland Heights (Ohio) |
| 1903 |
Alex SMITH (SCO) |
Milwaukee - River Hills (Wisconsin) |
| 1904 |
Willie ANDERSON (SCO) |
Kent - Grand Rapids (Michigan) |
| 1905 |
Arthur SMITH (USA) |
Cincinnati - Cincinnati (Ohio) |
| 1906 |
Alex SMITH (SCO) |
Homewood - Flossmoor (Illinois) |
| 1907 |
Bobby SIMPSON (SCO) |
Hinsdale - Clarendon Hills (Illinois) |
| 1908 |
Willie ANDERSON (SCO) |
Normandie - Saint Louis (Missouri) |
| 1909 |
Willie ANDERSON (SCO) |
Skokie - Glencoe (Illinois) |
| 1910 |
Chick EVANS (USA) |
Beverly - Chicago (Illinois) |
| 1911 |
Bobby SIMPSON (SCO) |
Kent - Grand Rapids (Michigan) |
| 1912 |
Macdonald SMITH (SCO) |
Idlewild - Flossmoor (Illinois) |
| 1913 |
John McDERMOTT (USA) |
Memphis - Memphis (Tennessee) |
| 1914 |
Jim BARNES (ENG) |
Interlachen - Edina (Minnesota) |
| 1915 |
Tom McNAMARA (USA) |
Glen Oak - Glen Ellyn (Illinois) |
| 1916 |
Walter HAGEN (USA) |
Blue Mound - Milwaukee (Wisconsin) |
| 1917 |
Jim BARNES (ENG) |
Westmoreland - Wilmette (Illinois) |
| 1918 |
non disputato |
| 1919 |
Jim BARNES (ENG) |
Mayfield - Lyndhurst (Ohio) |
| 1920 |
Jock HUTCHISON (SCO) |
Olympia Fields - Olympia Fields (Illinois) |
| 1921 |
Walter HAGEN (USA) |
Oakwood - Cleveland Heights (Ohio) |
| 1922 |
Mike BRADY (USA) |
Oakland Hills - Bloomfield Hills (Michigan) |
| 1923 |
Jock HUTCHISON (SCO) |
Colonial - Cordova (Tennessee) |
| 1924 |
Bill MEHLHORN (USA) |
Calumet - Homewood (Illinois) |
| 1925 |
Macdonald SMITH (SCO) |
Youngstown - Youngstown (Ohio) |
| 1926 |
Walter HAGEN (USA) |
Highland - Indianapolis (Indiana) |
| 1927 |
Walter HAGEN (USA) |
Olympia Fields - Olympia Fields (Illinois) |
| 1928 |
Abe ESPINOSA (USA) |
North Shore - Glenview (Illinois) |
| 1929 |
Tommy ARMOUR (USA) |
Ozaukee - Mequon (Wisconsin) |
| 1930 |
Gene SARAZEN (USA) |
Indianwood - Lake Orion (Michigan) |
| 1931 |
Ed DUDLEY (USA) |
Miami Valley - Dayton (Ohio) |
| 1932 |
Walter HAGEN (USA) |
Canterbury - Beachwood (Ohio) |
| 1933 |
Macdonald SMITH (SCO) |
Olympia Fields - Olympia Fields (Illinois) |
| 1934 |
Harry COOPER (ENG) |
Country Club of Peoria - Peoria Heights (Illinois) |
| 1935 |
Johnny REVOLTA (USA) |
South Bend - South Bend - Indiana |
| 1936 |
Ralph GULDAHL (USA) |
Davenport - Pleasant Valley (Iowa) |
| 1937 |
Ralph GULDAHL (USA) |
Canterbury - Beachwood (Ohio) |
| 1938 |
Ralph GULDAHL (USA) |
Westwood - Saint Louis (Missouri) |
| 1939 |
Byron NELSON (USA) |
Medinah - Medinah (Illinois) |
| 1940 |
Jimmy DEMARET (USA) |
River Oaks - Houston (Texas) |
| 1941 |
Ed OLIVER (USA) |
Phoenix - Phoenix (Arizona) |
| 1942 |
Herman BARRON (USA) |
Phoenix - Phoenix (Arizona) |
| 1943 |
non disputato per la Seconda Guerra Mondiale |
| 1944 |
non disputato per la Seconda Guerra Mondiale |
| 1945 |
non disputato per la Seconda Guerra Mondiale |
| 1946 |
Ben HOGAN (USA) |
Sunset - Saint Louis (Missouri) |
| 1947 |
Johnny PALMER (USA) |
Salt Lake City - Salt Lake City (Utah) |
| 1948 |
Ben HOGAN (USA) |
Brookfield - Clarence (New York) |
| 1949 |
Sam SNEAD (USA) |
Keller - Saint Paul (Minnesota) |
| 1950 |
Sam SNEAD (USA) |
Brentwood - Los Angeles (California) |
| 1951 |
Marty FURGOL (USA) |
Davenport - Pleasant Valley (Iowa) |
| 1952 |
Lloyd MANGRUM (USA) |
Westwood - Saint Louis (Missouri) |
| 1953 |
Dutch HARRISON (USA) |
Bellerive - Saint Louis (Missouri) |
| 1954 |
Lloyd MANGRUM (USA) |
Kenwood - Cincinnati (Ohio) |
| 1955 |
Cary MIDDLECOFF (USA) |
Portland - Portland (Oregon) |
| 1956 |
Mike FETCHICK (USA) |
Presidio - San Francisco (California) |
| 1957 |
Doug FORD (USA) |
Plum Hollow - Southfield (Michigan) |
| 1958 |
Doug SANDERS (USA) |
Red Run - Royal Oak (Michigan) |
| 1959 |
Mike SOUCHAK (USA) |
Pittsburgh - Pittsburgh (Pennsylvania) |
| 1960 |
Stan LEONARD (CAN) |
Western - Redford (Michigan) |
| 1961 |
Arnold PALMER (USA) |
Blythefield - Belmont (Michigan) |
| 1962 |
Jacky CUPIT (USA) |
Medinah - Medinah (Illinois) |
| 1963 |
Arnold PALMER (USA) |
Beverly - Chicago (Illinois) |
| 1964 |
Chi-Chi RODRIGUEZ (USA) |
Tam O'Shanter - Niles (Ilinois) |
| 1965 |
Billy CASPER (USA) |
Tam O'Shanter - Niles (Ilinois) |
| 1966 |
Billy CASPER (USA) |
Medinah - Medinah (Illinois) |
| 1967 |
Jack NICKLAUS (USA) |
Beverly - Chicago (Illinois) |
| 1968 |
Jack NICKLAUS (USA) |
Olympia Fields - Olympia Fields (Illinois) |
| 1969 |
Billy CASPER (USA) |
Midlothian - Midlothian (Illinois) |
| 1970 |
Hugh ROYER Jr. (USA) |
Beverly - Chicago (Illinois) |
| 1971 |
Bruce CRAMPTON (AUS) |
Olympia Fields - Olympia Fields (Illinois) |
| 1972 |
Jim JAMIESON (USA) |
Sunset Ridge - Northfield (Illinois) |
| 1973 |
Billy CASPER (USA) |
Midlothian - Midlothian (Illinois) |
| 1974 |
Tom WATSON (USA) |
Butler National - Oak Brook (Illinois) |
| 1975 |
Hale IRWIN (USA) |
Butler National - Oak Brook (Illinois) |
| 1976 |
Al GEIBERGER (USA) |
Butler National - Oak Brook (Illinois) |
| 1977 |
Tom WATSON (USA) |
Butler National - Oak Brook (Illinois) |
| 1978 |
Andy BEAN (USA) |
Butler National - Oak Brook (Illinois) |
| 1979 |
Larry NELSON (USA) |
Butler National - Oak Brook (Illinois) |
| 1980 |
Scott SIMPSON (USA) |
Butler National - Oak Brook (Illinois) |
| 1981 |
Ed FIORI (USA) |
Butler National - Oak Brook (Illinois) |
| 1982 |
Tom WEISKOPF (USA) |
Butler National - Oak Brook (Illinois) |
| 1983 |
Mark McCUMBER (USA) |
Butler National - Oak Brook (Illinois) |
| 1984 |
Tom WATSON (USA) |
Butler National - Oak Brook (Illinois) |
| 1985 |
Scott VERPLANK (USA) |
Butler National - Oak Brook (Illinois) |
| 1986 |
Tom KITE (USA) |
Butler National - Oak Brook (Illinois) |