| MD | Players | Club | Nationality | DOB | A(D) |
|---|---|---|---|---|---|
| 01-Jul-2017 |  Damian Willemse | Western Stormers | South Africa | 07-May-1998 | 19(55) |
| 08-Jul-2017 | Juarno Augustus | Western Stormers | South Africa | 09-Dec-1997 | 19(211) |
| 18-Mar-2017 | Marcos Kremer | Jaguares | Argentina | 30-Jul-1997 | 19(231) |
| 24-Feb-2017 | Curwin Bosch | Sharks | South Africa | 25-Jun-1997 | 19(244) |
| 11-Mar-2017 | Izaia Perese | Queensland Reds | Australia | 17-May-1997 | 19(298) |
| 18-Mar-2017 | Michael Tambwe | Lions | South Africa | 12-May-1997 | 19(310) |
| 23-Feb-2017 | Reiko Ioane | Blues | New Zealand | 18-Mar-1997 | 19(342) |
| 25-Mar-2017 | Yaw Penxe | Southern Kings | South Africa | 03-Apr-1997 | 19(356) |
| 25-Feb-2017 | Jordie Barrett | Hurricanes | New Zealand | 17-Feb-1997 | 20(8) |
| 23-Feb-2017 | Jack Maddocks | Melbourne Rebels | Australia | 05-Feb-1997 | 20(18) |
| 18-Mar-2017 | Benhard Janse van Rensburg | Sharks | South Africa | 14-Jan-1997 | 20(63) |
| 01-Apr-2017 | Cobus Wiese | Western Stormers | South Africa | 02-Jan-1997 | 20(89) |
| 17-Mar-2017 | Manasa Mataele | Crusaders | Fiji | 27-Nov-1996 | 20(110) |
| 17-Mar-2017 | Shaun Stevenson | Chiefs | New Zealand | 14-Nov-1996 | 20(123) |
| 15-Apr-2017 | Alex Mafi | Queensland Reds | Australia | 07-Nov-1996 | 20(159) |
| 06-May-2017 | Campbell Magnay | Queensland Reds | Australia | 10-Nov-1996 | 20(177) |
| 11-Mar-2017 | Izack Rodda | Queensland Reds | Australia | 20-Aug-1996 | 20(203) |
| 15-Apr-2017 | Lukhan Lealaiaulolo-Tui | Queensland Reds | Australia | 19-Sep-1996 | 20(208) |
| 29-Apr-2017 | Jonathan Taumateine | Chiefs | Samoa | 28-Sep-1996 | 20(213) |
| 15-Jul-2017 | Alex Nankivell | Chiefs | New Zealand | 25-Oct-1996 | 20(263) |
| 27-May-2017 | Quinten Strange | Crusaders | New Zealand | 21-Aug-1996 | 20(279) |
| 25-Mar-2017 | Sio Tomkinson | Highlanders | New Zealand | 27-May-1996 | 20(302) |
| 25-Mar-2017 | James Tuttle | Queensland Reds | Australia | 13-May-1996 | 20(316) |
| 01-Apr-2017 | Taniela Tupou | Queensland Reds | Tonga | 10-May-1996 | 20(326) |
| 02-Jun-2017 | Sam Nock | Blues | New Zealand | 18-Jun-1996 | 20(349) |
| 04-Mar-2017 | Tyrel Lomax | Melbourne Rebels | New Zealand | 16-Mar-1996 | 20(353) |
| 04-Mar-2017 | Tyler Paul | Southern Kings | South Africa | 20-Jan-1996 | 21(44) |
| 25-Feb-2017 | Ruan Ackermann | Lions | South Africa | 29-Dec-1995 | 21(59) |
| 15-Jul-2017 | Jordan Jackson-Hope | Brumbies | Australia | 04-May-1996 | 21(72) |
| 02-Apr-2017 | Mack Mason | New South Wales | Australia | 19-Jan-1996 | 21(74) |
| 17-Mar-2017 | Solomona Alaimalo | Chiefs | New Zealand | 27-Dec-1995 | 21(81) |
| 13-May-2017 | Onehunga Havili | Western Force | Australia | 16-Feb-1996 | 21(87) |
| 04-Mar-2017 | Jason Jenkins | Bulls | South Africa | 02-Dec-1995 | 21(93) |
| 06-May-2017 | Sibusiso Nkosi | Sharks | South Africa | 21-Jan-1996 | 21(106) |
| 29-Apr-2017 | Jeremy Ward | Sharks | South Africa | 10-Jan-1996 | 21(110) |
| 25-Feb-2017 | Andrew Kellaway | New South Wales | Australia | 12-Oct-1995 | 21(137) |
| 25-Feb-2017 | Hanro Liebenberg | Bulls | South Africa | 10-Oct-1995 | 21(139) |
| 17-Mar-2017 | Sean Wainui | Crusaders | New Zealand | 23-Oct-1995 | 21(146) |
| 24-Feb-2017 | Jonathan Faauli | Chiefs | Samoa | 13-Sep-1995 | 21(165) |
| 07-Apr-2017 | Wes Goosen | Hurricanes | New Zealand | 20-Oct-1995 | 21(170) |
| 15-Apr-2017 | Sam McNicol | Chiefs | New Zealand | 06-Oct-1995 | 21(192) |
| 08-Apr-2017 | Rahboni Warren-Vosayaco | Sunwolves | Japan | 28-Sep-1995 | 21(193) |
| 25-Feb-2017 | Jermaine Ainsley | Western Force | Australia | 08-Aug-1995 | 21(202) |
| 24-Feb-2017 | Jean Luc du Preez | Sharks | South Africa | 05-Aug-1995 | 21(204) |
| 01-Apr-2017 | TJ Faiane | Blues | New Zealand | 24-Aug-1995 | 21(221) |
| 04-Mar-2017 | Ox Nche | Cheetahs | South Africa | 23-Jul-1995 | 21(225) |
| 25-Feb-2017 | Irae Simone | New South Wales | Australia | 10-Jul-1995 | 21(231) |
| 01-Apr-2017 | Daniel du Preez | Sharks | South Africa | 05-Aug-1995 | 21(240) |
| 25-Feb-2017 | Malcolm Jaer | Southern Kings | South Africa | 29-Jun-1995 | 21(242) |
| 23-Feb-2017 | Akira Ioane | Blues | New Zealand | 16-Jun-1995 | 21(253) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).