| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS | ms* | WIND |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 2 | 1913 | Noah LYLES |
USA |
19.86 Q | +0.1 | |
| 2 | 2 | 2 | 625 | Alex QUIÑÓNEZ |
ECU |
19.95 Q | +0.1 | |
| 3 | 3 | 2 | 475 | Zhenye XIE |
CHN |
20.03 q | .023 | +0.1 |
| 4 | 1 | 1 | 827 | Adam GEMILI |
GBR |
20.03 Q SB | .025 | -0.3 |
| 5 | 1 | 3 | 400 | Andre DE GRASSE |
CAN |
20.08 Q | -0.1 | |
| 6 | 2 | 1 | 1775 | Ramil GULIYEV |
TUR |
20.16 Q | -0.3 | |
| 7 | 3 | 1 | 397 | Aaron BROWN |
CAN |
20.20 q | -0.3 | |
| 8 | 2 | 3 | 1750 | Kyle GREAUX |
TTO |
20.24 Q | -0.1 | |
| 9 | 4 | 2 | 620 | Yancarlos MARTÍNEZ |
DOM |
20.28 SB | .276 | +0.1 |
| 10 | 4 | 1 | 1751 | Jereem RICHARDS |
TTO |
20.28 | .280 | -0.3 |
| 11 | 3 | 3 | 841 | Zharnel HUGHES |
GBR |
20.30 | -0.1 | |
| 12 | 4 | 3 | 1424 | Taymir BURNET |
NED |
20.34 PB | .334 | -0.1 |
| 13 | 5 | 2 | 399 | Brendon RODNEY |
CAN |
20.34 | .339 | +0.1 |
| 14 | 5 | 3 | 1626 | Anaso JOBODWANA |
RSA |
20.34 SB | .340 | -0.1 |
| 15 | 6 | 3 | 1153 | Yohan BLAKE |
JAM |
20.37 | -0.1 | |
| 16 | 5 | 1 | 1156 | Rasheed DWYER |
JAM |
20.54 | -0.3 | |
| 17 | 6 | 1 | 1636 | Clarence MUNYAI |
RSA |
20.55 | .543 | -0.3 |
| 18 | 7 | 1 | 1823 | Serhiy SMELYK |
UKR |
20.55 | .547 | -0.3 |
| 19 | 6 | 2 | 1157 | Andre EWERS |
JAM |
20.61 | .606 | +0.1 |
| 20 | 7 | 3 | 565 | Reynier MENA |
CUB |
20.61 | .607 | -0.1 |
| 21 | 7 | 2 | 1087 | Eseosa Fostine DESALU |
ITA |
20.73 | +0.1 | |
| 22 | 8 | 3 | 1460 | Divine ODUDURU |
NGR |
20.84 | -0.1 | |
| 2 | 826 | Miguel FRANCIS |
GBR |
DNS | ||||
| 1 | 1681 | Alex WILSON |
SUI |
DNS |
ms - Milliseconds - shown when two or more competitors finish with the same time down to hundredths of a second