| John Mahaffey | |
|---|---|
| Personal information | |
| Full name | John Drayton Mahaffey Jr. |
| Born | May 9, 1948 Kerrville, Texas, U.S. |
| Height | 5 ft 9 in (1.75 m) |
| Weight | 160 lb (73 kg; 11 st) |
| Sporting nationality |  United States |
| Residence | The Woodlands, Texas, U.S. |
| Career | |
| College | University of Houston |
| Turned professional | 1971 |
| Former tour(s) | PGA Tour Champions Tour |
| Professional wins | 16 |
| Number of wins by tour | |
| PGA Tour | 10 |
| PGA Tour Champions | 1 |
| Other | 5 |
| Best results in major championships (wins: 1) | |
| Masters Tournament | T8: 1981 |
| PGA Championship | Won: 1978 |
| U.S. Open | 2nd: 1975 |
| The Open Championship | T10: 1975 |
John Drayton Mahaffey Jr. (born May 9, 1948) is an American professional golfer who has won numerous tournaments including 10 PGA Tour events.