400m U20 Men, Heat:2 of 7 ; Official result since 16:43
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 6 | 309 | Tsaone Dintwa | LDAC | JUN | 48.84 | |||
| 2 | 7 | 327 | Warona Mokgosi | LDAC | JUN | 49.03 | |||
| 3 | 4 | 260 | Brian SELEKANTSWE | TATI | JUN | 49.23 | |||
| 4 | 2 | 56 | Issac MAKHEBA | BDF | JUN | 51.88 | |||
| 5 | 5 | 262 | Thabang Tsaone TSHWANELA | TATI | JUN | 52.19 | |||
| 6 | 8 | 366 | Molatedi GOEDITSWE | MTFC | JUN | 54.54 | |||
| 1 | 16 | Thabiso Junior Megala | MAHI | JUN | DNS | ||||
| 3 | 227 | Kago MAPHUTHELA | PMAD | JUN | DNS |
