John-Laffnie de Jager
| Country (sports) | South Africa |
|---|---|
| Residence | Ermelo, Transvaal, South Africa |
| Born | 17 March 1973 Johannesburg, South Africa |
| Height | 1.93 m (6 ft 4 in) |
| Turned pro | 1992 |
| Retired | 2003 |
| Plays | Right-handed |
| Prize money | $1,357,700 |
| Singles | |
| Career record | 0–3 |
| Career titles | 0 0 Challenger, 0 Futures |
| Highest ranking | No. 313 (12 October 1992) |
| Grand Slam singles results | |
| Australian Open | Q1 (1993) |
| Wimbledon | 1R (1992) |
| US Open | Q2 (1992) |
| Doubles | |
| Career record | 246–258 |
| Career titles | 7 7 Challenger, 0 Futures |
| Highest ranking | No. 11 (31 July 2000) |
| Grand Slam doubles results | |
| Australian Open | SF (1993) |
| French Open | 2R (1993, 1998) |
| Wimbledon | SF (2000) |
| US Open | SF (1998, 2001) |
| Other doubles tournaments | |
| Tour Finals | RR (1999) |
| Olympic Games | SF – 4th (2000) |
| Grand Slam mixed doubles results | |
| Australian Open | F (1997) |
| French Open | F (1995) |
| Wimbledon | QF (1997, 2000) |
| US Open | SF (1994) |
| Last updated on: 24 November 2021. | |
John-Laffnie de Jager (born 17 March 1973) is a South African former tour professional tennis player. A doubles specialist, de Jager reached the semi-finals for three different grand slam tournaments three times in three different years partnering three different fellow South African players. de Jager is the current non-playing captain of the South Africa Davis Cup team.