| Piston van Wyk | |
| Birth Name: | Jacobus Frederick Beatrix van Wyk |
| Birth Place: | Vereeniging, Gauteng |
| Birth Date: | 21 December 1943 |
| Height: | 1.77m |
| Weight: | 86kg |
| Ru Position: | Hooker |
| Ru Provinceyears1: | 1970–1975 |
| Ru Provinceyears2: | 1976 |
| Ru Nationalteam1: | South Africa |
| Repyears1: | 1970–1976 |
| Repcaps1: | 15 |
| School: | John Orr Technical High School, Johannesburg |
Jacobus Frederick Beatrix 'Piston' van Wyk (born 21 December 1943) is a former South African rugby union player.
Van Wyk played most of his provincial rugby in South Africa with and also played one season with . He made his test debut for the Springboks in 1970 against New Zealand at Loftus Versfeld in Pretoria and played in all four tests during the series against the touring All Blacks. In 1971 he played in the test series against France and Australia and in 1972, he was the hooker in the losing test against at Ellis Park. He then played three tests against the 1974 British Lions and two tests against the 1976 All Blacks.[1] He also played four tour matches for the Springboks.[2]
| No. | Opponents | Results (SA 1st) | Position | Tries | Dates | Venue | |
|---|---|---|---|---|---|---|---|
| 1. | 17–6 | Hooker | 25 July 1970 | Loftus Versfeld, Pretoria | |||
| 2. |  New Zealand | 8–9 | Hooker | 8 August 1970 | Newlands, Cape Town | ||
| 3. | New Zealand | 14–3 | Hooker | 29 August 1970 | Boet Erasmus Stadium, Port Elizabeth | ||
| 4. | New Zealand | 20–17 | Hooker | 12 September 1970 | Ellis Park, Johannesburg | ||
| 5. | 22–9 | Hooker | 12 June 1971 | Free State Stadium, Bloemfontein | |||
| 6. |  France | 8–8 | Hooker | 19 June 1971 | Kings Park, Durban | ||
| 7. | 19–11 | Hooker | 17 July 1971 | Sydney Cricket Ground, Sydney | |||
| 8. |  Australia | 14–6 | Hooker | 31 July 1971 | Brisbane Exhibition Ground, Brisbane | ||
| 9. | Australia | 18–6 | Hooker | 7 August 1971 | Sydney Cricket Ground, Sydney | ||
| 10. | 9–18 | Hooker | 3 June 1972 | Ellis Park, Johannesburg | |||
| 11. | 3–12 | Hooker | 8 June 1974 | Newlands, Cape Town | |||
| 12. | British Lions | 9–26 | Hooker | 13 July 1974 | Boet Erasmus Stadium, Port Elizabeth | ||
| 13. | British Lions | 13–13 | Hooker | 27 July 1974 | Ellis Park, Johannesburg | ||
| 14. | 15–10 | Hooker | 4 September 1976 | Newlands, Cape Town | |||
| 15. | New Zealand | 15–14 | Hooker | 18 September 1976 | Ellis Park, Johannesburg |