The tournament began in 1922 as the Texas Open, becoming the San Antonio Texas Open in 1970, the Texas Open in 1981, the Vantage Championship in 1986, the Texas Open Presented by Nabisco in 1987, the H-E-B Texas Open in 1990, the LaCantera Texas Open in 1995, the Westin Texas Open in 1998, and the Valero Texas Open in 2002 (x-won in playoff; y-weather-shortened).
| Past champions | |||
| Year | Winner | Score | Course |
| 2003 | Tommy Armour III | 256 (26-under) | LaCantera GC, San Antonio |
| 2002 | Loren Roberts | 261 (19-under) | LaCantera GC, San Antonio |
| 2001 | Justin Leonard | 266 (18-under) | LaCantera GC, San Antonio |
| 2000 | Justin Leonard | 261 (19-under) | LaCantera GC, San Antonio |
| 1999 | x-Duffy Waldorf | 270 (18-under) | LaCantera GC, San Antonio |
| 1998 | Hal Sutton | 270 (18-under) | LaCantera GC, San Antonio |
| 1997 | Tim Herron | 271 (17-under) | LaCantera GC, San Antonio |
| 1996 | David Ogrin | 275 (13-under) | LaCantera GC, San Antonio |
| 1995 | Duffy Waldorf | 268 (20-under) | LaCantera GC, San Antonio |
| 1994 | Bob Estes | 265 (19-under) | Oak Hills CC, San Antonio |
| 1993 | x-Jay Haas | 263 (21-under) | Oak Hills CC, San Antonio |
| 1992 | x-Nick Price | 263 (21-under) | Oak Hills CC, San Antonio |
| 1991 | x-Blaine McCallister | 269 (11-under) | Oak Hills CC, San Antonio |
| 1990 | Mark O'Meara | 261 (19-under) | Oak Hills CC, San Antonio |
| 1989 | Donnie Hammond | 258 (22-under) | Oak Hills CC, San Antonio |
| 1988 | Corey Pavin | 259 (21-under) | Oak Hills CC, San Antonio |
| 1987 | No tournament | ||
| 1986 | y-Ben Crenshaw | 196 (14-under) | Oak Hills CC, San Antonio |
| 1985 | x-John Mahaffey | 268 (12-under) | Oak Hills CC, San Antonio |
| 1984 | Calvin Peete | 266 (14-under) | Oak Hills CC, San Antonio |
| 1983 | Jim Colbert | 261 (19-under) | Oak Hills CC, San Antonio |
| 1982 | Jay Haas | 262 (18-under) | Oak Hills CC, San Antonio |
| 1981 | x-Bill Rogers | 266 (14-under) | Oak Hills CC, San Antonio |
| 1980 | Lee Trevino | 265 (15-under) | Oak Hills CC, San Antonio |
| 1979 | Lou Graham | 268 (12-under) | Oak Hills CC, San Antonio |
| 1978 | Ron Streck | 265 (15-under) | Oak Hills CC, San Antonio |
| 1977 | Hale Irwin | 266 (14-under) | Oak Hills CC, San Antonio |
| 1976 | x-Butch Baird | 273 (15-under) | Woodlake GC, San Antonio |
| 1975 | x-Don January | 275 (13-under) | Woodlake GC, San Antonio |
| 1974 | Terry Diehl | 269 (19-under) | Woodlake GC, San Antonio |
| 1973 | Ben Crenshaw | 270 (14-under) | Woodlake GC, San Antonio |
| 1972 | Mike Hill | 273 (15-under) | Woodlake GC, San Antonio |
| 1971 | No tournament | ||
| 1970 | Ron Cerrudo | 273 (11-under) | Pecan Valley CC, San Antonio |
| 1969 | x-Deane Beman | 274 (10-under) | Pecan Valley CC, San Antonio |
| 1968 | No tournament | ||
| 1967 | Chi Chi Rodriguez | 277 (7-under) | Pecan Valley CC, San Antonio |
| 1966 | Harold Henning | 272 (8-under) | Oak Hills CC, San Antonio |
| 1965 | Frank Beard | 270 (10-under) | Oak Hills CC, San Antonio |
| 1964 | Bruce Crampton | 273 (7-under) | Oak Hills CC, San Antonio |
| 1963 | Phil Rodgers | 268 (12-under) | Oak Hills CC, San Antonio |
| 1962 | Arnold Palmer | 273 (7-under) | Oak Hills CC, San Antonio |
| 1961 | Arnold Palmer | 270 (10-under) | Oak Hills CC, San Antonio |
| 1960 | Arnold Palmer | 276 (12-under) | Ft. Sam Houston GC, San Antonio |
| 1959 | Wes Ellis | 276 (8-under) | Brackenridge Park GC, San Antonio |
| 1958 | Bill Johnston | 274 (10-under) | Brackenridge Park GC, San Antonio |
| 1957 | Jay Hebert | 271 (13-under) | Brackenridge Park GC, San Antonio |
| 1956 | Gene Littler | 276 (12-under) | Ft. Sam Houston GC, San Antonio |
| 1955 | Mike Souchack | 257 (27-under) | Brackenridge Park GC, San Antonio |
| 1954 | Chandler Harper | 259 (25-under) | Brackenridge Park GC, San Antonio |
| 1953 | Tony Holguin | 264 (20-under) | Brackenridge Park GC, San Antonio |
| 1952 | Jack Burke Jr. | 260 (24-under) | Brackenridge Park GC, San Antonio |
| 1951 | x-Dutch Harrison | 265 (21-under) | Brackenridge Park GC, San Antonio Ft. Sam Houston GC, San Antonio |
| 1950 | Sam Snead | 265 (21-under) | Brackenridge Park GC, San Antonio Ft. Sam Houston GC, San Antonio |
| 1949 | Dave Douglas | 268 (20-under) | Willow Springs GC, San Antonio |
| 1948 | Sam Snead | 264 (24-under) | Willow Springs GC, San Antonio |
| 1947 | Ed Oliver | 265 (23-under) | Willow Springs GC, San Antonio |
| 1946 | Ben Hogan | 264 (24-under) | Willow Springs GC, San Antonio |
| 1945 | Sam Byrd | 268 (20-under) | Willow Springs GC, San Antonio |
| 1944 | Johnny Revolta | 273 (15-under) | Willow Springs GC, San Antonio |
| 1943 | No tournament | ||
| 1942 | x-Chick Harbart | 272 (16-under) | Willow Springs GC, San Antonio |
| 1941 | Lawson Little | 273 (15-under) | Willow Springs GC, San Antonio |
| 1940 | x-Byron Nelson | 271 (13-under) | Brackenridge Park GC, San Antonio |
| 1939 | Dutch Harrison | 271 (13-under) | Brackenridge Park GC, San Antonio |
| 1938 | No tournament | ||
| 1937 | No tournament | ||
| 1936 | No tournament | ||
| 1935 | No tournament | ||
| 1934 | Wiffy Cox | 283 (1-under) | Brackenridge Park GC, San Antonio |
| 1933 | No tournament | ||
| 1932 | Clarence Clark | 287 (3-over) | Brackenridge Park GC, San Antonio |
| 1931 | Abe Espinosa | 281 (3-under) | Brackenridge Park GC, San Antonio |
| 1930 | Denny Shute | 277 (7-under) | Brackenridge Park GC, San Antonio |
| 1929 | Bill Mehlhorn | 277 (7-under) | Brackenridge Park GC, San Antonio |
| 1928 | Bill Mehlhorn | 277 (11-under) | Willow Springs GC, San Antonio |
| 1927 | Bobby Cruickshank | 272 (16-under) | Willow Springs GC, San Antonio |
| 1926 | Mac Smith | 288 (4-over) | Brackenridge Park GC, San Antonio |
| 1925 | Joe Turnesa | 284 (Even) | Brackenridge Park GC, San Antonio |
| 1924 | Joe Kirkwood | 279 (5-under) | Brackenridge Park GC, San Antonio |
| 1923 | x-Walter Hagen | 279 (5-under) | Brackenridge Park GC, San Antonio |
| 1922 | Bob MacDonald | 281 (3-under) | Brackenridge Park GC, San Antonio |
