2005 Jim Furyk ( Cialis Western Open  )
2004 Stephen Ames ( Cialis Western Open )
2003 Tiger Woods ( 100th Western Open )
2002 Jerry Kelly ( Advil Western Open )
2001 Scott Hoch ( Advil Western Open )
2000 Robert Allenby ( Advil Western Open )
1999 Tiger Woods ( Motorola Western Open )
1998 Joe Durant ( Motorola Western Open )
1997 Tiger Woods ( Motorola Western Open )
1996 Steve Stricker ( Motorola Western Open )
1995 Billy Mayfair ( Motorola Western Open )
1994 Nick Price ( Motorola Western Open )
1993 Nick Price ( Sprint Western Open )
1986 Tom Kite ( Western Open )
1985 Scott Verplank ( Western Open )
1984 Tom Watson ( Western Open )
1983 Mark Mccumber ( Western Open )
1981 Ed Fiori ( Western Open )
1980 Scott Simpson ( Western Open )
1979 Larry Nelson ( Western Open )
1978 Andy Bean ( Western Open )
1977 Tom Watson ( Western Open )
1976 Al Geiberger ( Western Open )
1975 Hale Irwin ( Western Open )
1974 Tom Watson ( Western Open )
1973 Billy Casper ( Western Open )
1969 Billy Casper ( Western Open )
1968 Jack Nicklaus ( Western Open )
1967 Jack Nicklaus ( Western Open )
1966 Billy Casper ( Western Open )
1965 Billy Casper ( Western Open )
1964 Chi Chi Rodriguez ( Western Open )
1963 Arnold Palmer ( Western Open )
1961 Arnold Palmer ( Western Open )