| | | Final | time |  | L | React. | bib |  | 1. K. James |  GRN | 44.24s | GR | 6 | 0.154s | 1568 |  | 2. W. van Niekerk |  RSA | 44.68s |  | 4 | 0.168s | 2111 |  | 3. L. Gordon |  TTO | 44.78s | SB | 3 | 0.183s | 2364 |  | 4. M. Rooney |  ENG | 45.15s |  | 5 | 0.156s | 1456 |  | 5. L. Williams |  BAH | 45.63s |  | 8 | 0.174s | 1172 |  | 6. J. Solomon |  TTO | 45.82s |  | 7 | 0.145s | 2376 |  | -. R. Quow |  TTO |  |  | 2 |  | 2373 |  | -. C. Brown |  BAH |  |  | 1 |  | 1141 | 
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 |  |  | First 2 and Best 2 progressed to Final. | 
 | | Semi1 | time |  | L | React. | bib |  | 1. M. Rooney |  ENG | 45.22s |  | 5 | 0.190s | 1456 |  | 2. J. Solomon |  TTO | 45.49s |  | 6 | 0.168s | 2376 |  | 3. C. Brown |  BAH | 45.55s |  | 3 | 0.152s | 1141 |  | 4. R. Mcdonald |  JAM | 45.95s |  | 8 | 0.188s | 1681 |  | 5. B. Taplin |  GRN | 46.68s |  | 4 | 0.168s | 1570 |  | 6. P. Osei |  CAN | 47.16s |  | 2 | 0.185s | 1262 |  | 7. P. Seribe |  BOT | 47.43s |  | 7 | 0.196s | 1222 |  | 8. M. Davis |  DMA | 47.49s |  | 1 | 0.171s | 1347 | 
 | Semi 2 | time |  | L | React. | bib |  | 1. K. James |  GRN | 45.14s |  | 4 | 0.156s | 1568 |  | 2. W. van Niekerk |  RSA | 45.41s |  | 2 | 0.173s | 2111 |  | 3. R. Quow |  TTO | 45.47s |  | 6 | 0.195s | 2373 |  | 4. M. Bingham |  ENG | 45.71s |  | 5 | 0.155s | 1368 |  | 5. A. Gauntlett |  JAM | 46.16s |  | 7 | 0.175s | 1664 |  | 6. D. Barnaby |  CAN | 46.28s |  | 3 | 0.168s | 1230 |  | 7. S. James |  GUY | 46.35s |  | 8 | 0.174s | 1582 |  | 8. E. Tugumisirize |  UGA | 46.57s |  | 1 | 0.187s | 2408 | 
 | Semi 3 | time |  | L | React. | bib |  | 1. L. Gordon |  TTO | 45.37s |  | 5 | 0.183s | 2364 |  | 2. L. Williams |  BAH | 45.44s |  | 4 | 0.175s | 1172 |  | 3. I. Makwala |  BOT | 45.57s |  | 3 | 0.191s | 1220 |  | 4. W. George |  GUY | 46.38s |  | 6 | 0.254s | 1580 |  | 5. N. Levine |  ENG | 46.57s |  | 2 | 0.151s | 1420 |  | 6. M. Robertson |  CAN | 47.30s |  | 1 | 0.156s | 1264 |  | 7. S. Kombe |  ZAM | 47.70s |  | 8 | 0.181s | 2451 |  | -. S. Solomon |  AUS | SNF |  | 7 |  | 1115 | 
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 | | Heat 1 | time |  | React. | bib |  | 1. J. Solomon |  TTO | 45.69s |  | 0.169s | 2376 |  | 2. W. George |  GUY | 46.25s |  | 0.230s | 1580 |  | 3. A. Gauntlett |  JAM | 46.31s |  | 0.178s | 1664 |  | 4. N. Levine |  ENG | 46.35s |  | 0.168s | 1420 |  | 5. E. Hurtault |  DMA | 47.02s |  | 0.171s | 1349 |  | 6. A. Garland |  TCA | 48.86s |  | 0.190s | 2324 |  | 7. H. Tuivai |  TGA | 49.54s |  | 0.221s | 2336 |  | 8. H. Inaas |  MDV | 50.02s | SB | 0.213s | 1863 | 
 | Heat 2 | time |  | React. | bib |  | 1. R. Quow |  TTO | 45.86s |  | 0.180s | 2373 |  | 2. S. Solomon |  AUS | 46.26s |  | 0.175s | 1115 |  | 3. W. van Niekerk |  RSA | 46.87s |  | 0.168s | 2111 |  | 4. S. Isah |  NGR | 47.51s |  | 0.149s | 1963 |  | 5. K. Acheampong |  GHA | 47.72s |  | 0.154s | 1520 |  | 6. R. Daniel |  LCA | 47.97s |  | 0.171s | 1813 |  | 7. T. Piniau |  PNG | 48.50s |  | 0.117s | 2082 | 
 | Heat 3 | time |  | React. | bib |  | 1. K. James |  GRN | 45.52s |  | 0.173s | 1568 |  | 2. M. Bingham |  ENG | 45.80s |  | 0.153s | 1368 |  | 3. R. Mcdonald |  JAM | 46.14s |  | 0.180s | 1681 |  | 4. M. Robertson |  CAN | 46.87s |  | 0.182s | 1264 |  | 5. N. Stone |  PNG | 47.60s |  | 0.171s | 2083 |  | 6. Valentine-parris |  SVG | 50.90s |  | 0.176s | 2296 |  | -. N. Akwu |  NGR | DQ |  |  | 1938 | 
 | Heat 4 | time |  | React. | bib |  | 1. L. Williams |  BAH | 46.07s |  | 0.197s | 1172 |  | 2. D. Barnaby |  CAN | 46.16s |  | 0.174s | 1230 |  | 3. E. Tugumisirize |  UGA | 46.73s |  | 0.204s | 2408 |  | 4. M. Muttai |  KEN | 47.60s |  | 0.175s | 1773 |  | 5. G. Gunde |  MAW | 47.85s | NR | 0.218s | 1853 |  | 6. A. Mussington |  AIA | 51.50s |  | 0.201s | 1002 |  | -. J. Obrien |  GHA | DNF |  |  | 1546 |  | -. R. Simmons |  NGR | DNF |  |  | 1987 | 
 | Heat 5 | time |  | React. | bib |  | 1. C. Brown |  BAH | 46.30s |  | 0.168s | 1141 |  | 2. S. James |  GUY | 46.39s |  | 0.171s | 1582 |  | 3. P. Seribe |  BOT | 46.64s |  | 0.151s | 1222 |  | 4. L. Roland |  SKN | 47.17s |  | 0.170s | 2243 |  | 5. T. Poleon |  LCA | 47.32s | SB | 0.191s | 1815 |  | 6. S. Viliamu Sepa |  SAM | 49.24s |  | 0.202s | 2138 |  | -. B. Mucheru |  KEN |  |  |  | 1768 | 
 | Heat 6 | time |  | React. | bib |  | 1. I. Makwala |  BOT | 45.33s |  | 0.187s | 1220 |  | 2. B. Taplin |  GRN | 45.90s |  | 0.205s | 1570 |  | 3. P. Osei |  CAN | 47.11s |  | 0.184s | 1262 |  | 4. T. Druce |  GGY | 49.62s |  | 0.156s | 1508 |  | -. S. Buoga |  KEN | DQ |  |  | 1732 |  | -. H. Graham Jr. |  JAM | DQ |  |  | 1667 |  | -. A. Ngaimoko |  UGA |  |  |  | 2403 | 
 | Heat 7 | time |  | React. | bib |  | 1. M. Rooney |  ENG | 45.57s |  | 0.194s | 1456 |  | 2. L. Gordon |  TTO | 45.84s |  | 0.184s | 2364 |  | 3. S. Kombe |  ZAM | 46.41s |  | 0.171s | 2451 |  | 4. M. Davis |  DMA | 46.94s | =PB | 0.177s | 1347 |  | 5. D. Gyasi |  GHA | 47.07s |  | 0.189s | 1536 |  | 6. P. Hazzard |  GRN | 47.33s |  | 0.198s | 1567 |  | 7. K. Matlaun |  PNG | 48.65s |  | 0.162s | 2079 |  | 8. I. Rusanganya |  TAN | 50.87s |  | 0.210s | 2316 | 
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 | | Lane Heat 1 | PB | SB | bib |  | 1. H. Tuivai |  TGA | 49.02s | 48.71s | 2336 |  | 2. A. Garland |  TCA | 46.82s | 46.82s | 2324 |  | 3. H. Inaas |  MDV | 50.70s | 49.64s | 1863 |  | 4. J. Solomon |  TTO | 44.98s | 44.98s | 2376 |  | 5. E. Hurtault |  DMA | 46.77s | 45.40s | 1349 |  | 6. A. Gauntlett |  JAM | 45.00s | 45.00s | 1664 |  | 7. W. George |  GUY | 45.57s | 45.57s | 1580 |  | 8. N. Levine |  ENG | 45.68s | 45.11s | 1420 | 
 | Lane Heat 2 | PB | SB | bib |  | 1. S. Isah |  NGR | 46.15s | 46.15s | 1963 |  | 2. W. van Niekerk |  RSA | 44.38s | 44.38s | 2111 |  | 3. K. Acheampong |  GHA | 47.11s | 47.11s | 1520 |  | 4. R. Quow |  TTO | 45.08s | 44.53s | 2373 |  | 5. R. Daniel |  LCA | 46.38s | 46.38s | 1813 |  | 6. S. Solomon |  AUS | 45.36s | 44.97s | 1115 |  | 7. T. Piniau |  PNG | 47.68s | 47.68s | 2082 | 
 | Lane Heat 3 | PB | SB | bib |  | 1. K. James |  GRN | 43.74s | 43.74s | 1568 |  | 2. N. Stone |  PNG | 47.33s | 46.70s | 2083 |  | 3. Valentine-parris |  SVG | 47.24s | 47.24s | 2296 |  | 4. M. Bingham |  ENG | 45.13s | 44.74s | 1368 |  | 5. R. Mcdonald |  JAM | 45.25s | 45.10s | 1681 |  | 6. M. Robertson |  CAN | 46.34s | 46.32s | 1264 |  | 7. N. Akwu |  NGR | 46.34s | 45.59s | 1938 | 
 | Lane Heat 4 | PB | SB | bib |  | 1. A. Mussington |  AIA |  | 51.39s | 1002 |  | 2. E. Tugumisirize |  UGA | 45.69s | 45.69s | 2408 |  | 3. R. Simmons |  NGR | 45.02s | 45.02s | 1987 |  | 4. M. Muttai |  KEN | 46.67s | 45.28s | 1773 |  | 5. G. Gunde |  MAW | 48.66s | 48.57s | 1853 |  | 6. J. Obrien |  GHA | 46.91s | 46.91s | 1546 |  | 7. D. Barnaby |  CAN | 45.55s | 45.47s | 1230 |  | 8. L. Williams |  BAH | 44.97s | 44.73s | 1172 | 
 | Lane Heat 5 | PB | SB | bib |  | 1. S. Viliamu Sepa |  SAM | 47.04s | 47.04s | 2138 |  | 2. L. Roland |  SKN | 46.41s | 46.41s | 2243 |  | 3. C. Brown |  BAH | 44.59s | 44.40s | 1141 |  | 4. T. Poleon |  LCA | 47.72s | 46.88s | 1815 |  | 5. S. James |  GUY | 46.15s | 46.15s | 1582 |  | 6. B. Mucheru |  KEN | 45.43s | 45.43s | 1768 |  | 7. P. Seribe |  BOT | 45.04s | 45.04s | 1222 | 
 | Lane Heat 6 | PB | SB | bib |  | 1. B. Taplin |  GRN | 45.18s | 45.18s | 1570 |  | 2. T. Druce |  GGY | 47.50s | 46.37s | 1508 |  | 3. P. Osei |  CAN | 46.38s | 45.51s | 1262 |  | 4. A. Ngaimoko |  UGA | 47.18s | 46.27s | 2403 |  | 5. S. Buoga |  KEN | 46.19s | 46.19s | 1732 |  | 6. H. Graham Jr. |  JAM | 45.29s | 45.19s | 1667 |  | 7. I. Makwala |  BOT | 44.01s | 44.01s | 1220 | 
 | Lane Heat 7 | PB | SB | bib |  | 1. L. Gordon |  TTO | 44.91s | 44.52s | 2364 |  | 2. K. Matlaun |  PNG | 48.18s | 48.18s | 2079 |  | 3. P. Hazzard |  GRN | 46.12s | 46.12s | 1567 |  | 4. D. Gyasi |  GHA | 46.66s | 46.66s | 1536 |  | 5. I. Rusanganya |  TAN |  | 49.32s | 2316 |  | 6. M. Rooney |  ENG | 45.03s | 44.60s | 1456 |  | 7. M. Davis |  DMA | 46.94s | 46.94s | 1347 |  | 8. S. Kombe |  ZAM | 45.48s | 45.48s | 2451 | 
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