400 meter Men Semi Final, Heat:2 of 3 ; Official result since 15:57
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 3 | 2651 | GLASSI Mohamed Farres | TUN | Senior | 46.40 | Q | ||
| 2 | 5 | 582 | SAMUKONGA Muzala | 45.48 | ZAM | Senior | 46.49 | Q | |
| 3 | 4 | 52 | NGOZI Zibane | BOT | Senior | 47.08 | q | ||
| 4 | 6 | 468 | MENDY Frédéric | SEN | Senior | 47.33 | |||
| 5 | 1 | 426 | NATHANIEL Samson | 45.5 | NGR | Senior | 47.66 | ||
| 6 | 8 | 565 | ADOLI Haron | 46.07 | UGA | Senior | 47.91 | ||
| 7 | 7 | 387 | GELDENHUYS Ivan Danny | 46.27 | NAM | Senior | 48.24 | ||
| 8 | 2 | 454 | SAÏDI Fabrisio | 47.83 | REU | Senior | 48.46 |