| Western Open | ||||
| Year | Winner | Score | Runner up | Score |
| 1916 | Walter Hagen | 286 | Jock Hutchison | 287 |
| 1917 | James Barnes | 283 | Walter Hagen | 285 |
| 1919 | James Barnes | 283 | Leo Diegel | 286 |
| 1920 | Jock Hutchison | 296 | James Barnes | 297 |
| 1920 | Clarence Hackney | 297 | ||
| 1920 | Harry Hampton | 297 | ||
| 1921 | Walter Hagen | 287 | Jock Hutchison | 292 |
| 1922 | Mike Brady | 291 | Laurie Ayton | 301 |
| 1922 | Jock Hutchison | 301 | ||
| 1923 | Jock Hutchison | 281 | Bobby Cruickshank | 287 |
| 1923 | Leo Diegel | 287 | ||
| 1923 | Walter Hagen | 287 | ||
| 1923 | Joe Kirkwood, Sr. | 287 | ||
| 1924 | Bill Mehlhorn | 293 | Al Watrous | 301 |
| 1925 | MacDonald Smith | 281 | Leo Diegel | 287 |
| 1925 | Johnny Farrell | 287 | ||
| 1925 | Emmet French | 287 | ||
| 1925 | Walter Hagen | 287 | ||
| 1925 | Bill Mehlhorn | 287 | ||
| 1926 | Walter Hagen | 279 | Harry Cooper | 288 |
| 1926 | Gene Sarazen | 288 | ||
| 1927 | Walter Hagen | 281 | Al Espinosa | 285 |
| 1927 | Bill Mehlhorn | 285 | ||
| 1928 | Abe Espinosa | 291 | Johnny Farrell | 294 |
| 1929 | Tommy Armour | 273 | Horton Smith | 281 |
| 1930 | Gene Sarazen | 278 | Al Espinosa | 285 |
| 1931 | Ed Dudley | 280 | Walter Hagen | 284 |
| 1932 | Walter Hagen | 287 | Olin Dutra | 288 |
| 1933 | MacDonald Smith | 282 | Tommy Armour | 288 |
| 1934 | Harry Cooper | Ky Laffoon | ||
| 1935 | Johnny Revolta | Willie Goggin | ||
| 1936 | Ralph Guldahl | Ray Mangrum | ||
| 1937 | Ralph Guldahl | Horton Smith | ||
| 1938 | Ralph Guldahl | 279 | Sam Snead | 286 |
| 1939 | Byron Nelson | 281 | Lloyd Mangrum | 282 |
| 1940 | Jimmy Demaret | 293 | Toney Penna | 293 |
| 1941 | Ed Oliver | Ben Hogan | 278 | |
| 1941 | Byron Nelson | 278 | ||
| 1942 | Herman Barron | 276 | Henry Picard | 278 |
| 1946 | Ben Hogan | Lloyd Mangrum | ||
| 1947 | Johnny Palmer | Bobby Locke | ||
| 1947 | Ed Oliver | |||
| 1948 | Ben Hogan | 281 | Ed Oliver | 281 |
| 1949 | Sam Snead | 268 | Cary Middlecoff | 272 |
| 1950 | Sam Snead | 282 | Jim Ferrier | 283 |
| 1950 | E. Harrison | 283 | ||
| 1951 | Marty Furgol | 270 | Cary Middlecoff | 271 |
| 1952 | Lloyd Mangrum | 274 | Bobby Locke | 282 |
| 1953 | E. Harrison | 278 | Fred Haas | 282 |
| 1953 | Ed Furgol | 282 | ||
| 1953 | Lloyd Mangrum | |||
| 1954 | Lloyd Mangrum | 277 | Ted Kroll | 277 |
| 1955 | Cary Middlecoff | 272 | Mike Souchak | 274 |
| 1956 | Mike Fetchick | 284 | Doug Ford | 284 |
| 1956 | Jay Hebert | 284 | ||
| 1956 | Don January | 284 | ||
| 1957 | Doug Ford | 279 | George Bayer | 279 |
| 1957 | Gene Littler | 279 | ||
| 1957 | Billy Maxwell | 279 | ||
| 1958 | Doug Sanders | 275 | Dow Finsterwald | 276 |
| 1959 | Mike Souchak | 272 | Arnold Palmer | 273 |
| 1960 | Stan Leonard | 278 | Art Wall | 278 |
| 1961 | Arnold Palmer | 271 | Sam Snead | 273 |
| 1962 | Jacky Cupit | 281 | Billy Casper | 283 |
| 1963 | Arnold Palmer | 280 | Julius Boros | 280 |
| 1963 | Jack Nicklaus | 280 | ||
| 1964 | Chi Chi Rodriguez | 268 | Arnold Palmer | 269 |
| 1965 | Billy Casper | 270 | Jack McGowan | 272 |
| 1965 | Chi Chi Rodriguez | 272 | ||
| 1966 | Billy Casper | 283 | Gay Brewer | 286 |
| 1967 | Jack Nicklaus | 274 | Doug Sanders | 276 |
| 1968 | Jack Nicklaus | 273 | Miller Barber | 276 |
| 1969 | Billy Casper | 276 | Rocky Thompson | 280 |
| 1970 | Hugh Royer | 273 | Dale Douglass | 274 |
| 1971 | Bruce Crampton | 279 | Bobby Nichols | 281 |
| 1972 | Jim Jamieson | 271 | Labron Harris | 277 |
| 1973 | Billy Casper | 272 | Larry Hinson | 273 |
| 1973 | Hale Irwin | 273 | ||
| 1974 | Tom Watson | 287 | J.C. Snead | 289 |
| 1974 | Tom Weiskopf | 289 | ||
| 1975 | Hale Irwin | 283 | Bobby Cole | 284 |
| 1976 | Al Geiberger | 288 | Joe Porter | 289 |
| 1977 | Tom Watson | 283 | Wally Armstrong | 284 |
| 1977 | Johnny Miller | 284 | ||
| 1978 | Andy Bean | 282 | Bill Rogers | 282 |
| 1979 | Larry Nelson | 286 | Ben Crenshaw | 286 |
| 1980 | Scott Simpson | 281 | Andy Bean | 286 |
| 1981 | Ed Fiori | 277 | Jim Colbert | 281 |
| 1981 | Greg Powers | 281 | ||
| 1981 | Jim Simons | 281 | ||
| 1982 | Tom Weiskopf | 276 | Larry Nelson | 277 |
| 1983 | Mark McCumber | 284 | Tom Watson | 285 |
| 1984 | Tom Watson | 280 | Greg Norman | 280 |
| 1985 | Scott Verplank | 279 | Jim Thorpe | 279 |
| 1986 | Tom Kite | 286 | Nick Price | 286 |
| 1986 | Fred Couples | 286 | ||
| 1986 | David Frost | 286 | ||
| Beatrice Western Open | ||||
| Year | Winner | Score | Runner up | Score |
| 1987 | D.A. Weibring | 207 | Larry Nelson | 208 |
| 1987 | Greg Norman | 208 | ||
| 1988 | Jim Benepe | 278 | Peter Jacobsen | 279 |
| 1989 | Mark McCumber | 275 | Peter Jacobsen | 275 |
| Centel Western Open | ||||
| Year | Winner | Score | Runner up | Score |
| 1990 | Wayne Levi | 275 | Payne Stewart | 279 |
| 1991 | Russ Cochran | 275 | Greg Norman | 277 |
| 1992 | Ben Crenshaw | 276 | Greg Norman | 277 |
| Sprint Western Open | ||||
| Year | Winner | Score | Runner up | Score |
| 1993 | Nick Price | 269 | Greg Norman | 274 |
| Motorola Western Open | ||||
| Year | Winner | Score | Runner up | Score |
| 1994 | Nick Price | 277 | Greg Kraft | 278 |
| 1995 | Billy Mayfair | 279 | Jay Haas | 280 |
| 1995 | Justin Leonard | 280 | ||
| 1995 | Jeff Maggert | 280 | ||
| 1995 | Scott Simpson | 280 | ||
| 1996 | Steve Stricker | 270 | Billy Andrade | 278 |
| 1996 | Jay Don Blake | 278 | ||
| 1997 | Tiger Woods | 275 | Frank Nobilo | 278 |
| 1998 | Joe Durant | 271 | Vijay Singh | 273 |
| 1999 | Tiger Woods | 273 | Mike Weir | 276 |
| Advil Western Open | ||||
| Year | Winner | Score | Runner up | Score |
| 2000 | Robert Allenby | 274 | Nick Price | 274 |
| 2001 | Scott Hoch | 267 | Davis Love III | 268 |
| 2002 | Jerry Kelly | 269 | Davis Love III | 271 |
| 100th Western Open presented by Golf Digest | ||||
| Year | Winner | Score | Runner up | Score |
| 2003 | Tiger Woods | 267 | Rich Beem | 272 |
| Cialis Western Open | ||||
| Year | Winner | Score | Runner up | Score |
| 2004 | Stephen Ames | 274 | Steve Lowery | 276 |
| 2005 | Jim Furyk | 270 | Tiger Woods | 272 |
| 2006 | Trevor Immelman | 271 | Mathew Goggin | 273 |
| 2006 | Tiger Woods | 273 | ||
| 2007 | Tiger Woods | 262 | Aaron Baddeley | 264 |