| Buick Challenge | |
| Location: | Pine Mountain, Georgia |
| Establishment: | 1970 |
| Final Year: | 2002 |
| Course: | Callaway Gardens Resort |
| Par: | 72 |
| Yardage: | 7057yd |
| Tour: | PGA Tour |
| Format: | Stroke play |
| Month Played: | October |
| Aggregate: | 261 Jonathan Byrd (2002) |
| To-Par: | −27 as above |
| Final Champion: |  Jonathan Byrd |
| Map: | USA#USA Georgia |
| Map Label: | Callaway Gardens Resort |
| Map Relief: | yes |
| Map Size: | 200 |
| Coordinates: | 32.829°N -84.843°W |
The Southern Open was a golf tournament on the PGA Tour from 1970 to 2002. It was played at the Green Island Country Club in Columbus, Georgia, from 1970 to 1990 and at the Callaway Gardens Resort (Mountain View Course), Pine Mountain, Georgia, from 1991 to 2002. It was founded in 1970 as the Green Island Open Invitational but was known for most of its existence as the Southern Open. The purse for the 2002 tournament was $3,700,000, with $666,000 going to the winner.
| Year | Winner | Score | To par | Margin of victory | Runner(s)-up | |
|---|---|---|---|---|---|---|
| Buick Challenge | ||||||
| 261 | −27 | 1 stroke | David Toms | |||
| 267 | −21 | Playoff | David Duval | |||
| 269 | −19 | 2 strokes | Jeff Maggert Nick Price | |||
| 271 | −17 | 3 strokes |  Stuart Appleby | |||
| Steve Elkington (2) | 267 | −21 | Playoff | Fred Funk | ||
| 270 | −18 | 4 strokes | Stewart Cink | |||
| 134 | −10 | Playoff | Fred Funk Davis Love III John Maginnes Len Mattiace | |||
| 272 | −16 | 1 stroke | John Morse Loren Roberts | |||
| Buick Southern Open | ||||||
| 200 | −16 | 5 strokes | Steve Rintoul | |||
| 278 | −10 | Playoff | Billy Andrade Mark Brooks Brad Bryant Bob Estes | |||
| 206 | −10 | 1 stroke | Jim Gallagher Jr. | |||
| 276 | −12 | 1 stroke | Robert Gamez | |||
| 265 | −15 | Playoff | Jim Hallet | |||
| Southern Open | ||||||
| 266 | −14 | 1 stroke | Jay Haas Tim Simpson | |||
| 270 | −10 | Playoff | Bob Tway | |||
| 266 | −14 | 7 strokes |  David Frost Mike Hulbert Larry Mize | |||
| 269 | −11 | 2 strokes | George Archer John Cook Tim Simpson Jim Thorpe | |||
| 264 | −16 | 2 strokes | Clarence Rose | |||
| Hubert Green (2) | 265 | −15 | 6 strokes | Rex Caldwell Scott Hoch Corey Pavin | ||
| 271 | −9 | Playoff | Sam Torrance | |||
| 266 | −14 | 2 strokes | Hale Irwin | |||
| 271 | −9 | Playoff | Mike Sullivan | |||
| 269 | −11 | 5 strokes | Dave Eichelberger Johnny Miller | |||
| 274 | −6 | Playoff | Tom Weiskopf | |||
| Jerry Pate (2) | 269 | −11 | 1 stroke | Phil Hancock | ||
| 266 | −14 | 7 strokes | Phil Hancock Mac McLendon Johnny Miller Steve Taylor | |||
| 274 | −6 | 2 strokes | Hubert Green | |||
| 264 | −16 | 3 strokes | John Schroeder | |||
| 271 | −9 | 1 stroke | Bruce Crampton J. C. Snead | |||
| 270 | −10 | 1 stroke | Forrest Fezler | |||
| 276 | −4 | Playoff | Chuck Courtney | |||
| Southern Open Invitational | ||||||
| 267 | −13 | 5 strokes | Deane Beman | |||
| Green Island Open Invitational | ||||||
| 274 | −6 | 2 strokes | Chris Blocker | |||