| Heat 1 | Team | time | | 1. Frank Fredericks | NAM | 10.32s | | 2. Pascal Dangbo | BEN | 10.51s | | 3. Nicholas Hogan | MRI | 10.57s | | 4. Mocci Raoumbe Patrick | GAB | 10.61s | | 5. Rammita Molise | LES | 10.81s | | -. Joseph Kojo | UGA | DNS | | -. Alpha Kamara | LBR | DNS |
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| Heat 2 | Team | time | | 1. Serge Bengono | CMR | 10.32s | | 2. Leonard Myles-Mills | GHA | 10.34s | | 3. Ibrahim Meite | CIV | 10.34s | | 4. Hadhari Djaffer | COM | 10.46s | | 5. Ezra Sambu | KEN | 10.65s | | 6. Roger Angono | CGO | 10.66s | | 7. Berhe Tesfagiorgis | ERI | 11.55s |
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| Heat 3 | Team | time | | 1. Francis Obikwelu | NGR | 10.32s | | 2. Benjamin Sirimou | CMR | 10.38s | | 3. Leroy Newton | RSA | 10.42s | | 4. Yves Sonan | CIV | 10.47s | | 5. Themba Ncube | ZIM | 10.64s | | 6. Barnabe Jolicoeur | MRI | 10.76s | | -. Kouami Ayassou | TOG | DNS |
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| Heat 4 | Team | time | | 1. Aliu Deji | NGR | 10.18s | | 2. Ahmed Douhou | CIV | 10.32s | | 3. Bradley Agnew | RSA | 10.54s | | 4. Jean Ngapout | CMR | 10.56s | | 5. Amarildo Almeida | GBS | 10.59s | | 6. Yvan Doboze | GAB | 10.93s | | -. Ben Faissoil | COM | DNS |
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| Heat 5 | Team | time | | 1. Innocent Asonze | NGR | 10.27s | | 2. Sherwin Vries | NAM | 10.39s | | 3. Fernando Ariete | GBS | 10.74s | | 4. Stanley Towett | KEN | 10.78s | | 5. David Mbyembita | GAB | 10.92s | | -. Arcadius Fanou | BEN | DQ | | -. Teko Folligan | TOG | DNS | | -. Franus Keita | SLE | DNS |
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| Heat 6 | Team | time | | 1. Matthew Quinn | RSA | 10.22s | | 2. Benedictus Botha | NAM | 10.35s | | 3. Stephane Buckland | MRI | 10.37s | | 4. Sebergue Moumi | CHA | 10.64s | | 5. Souhalia Alamou | BEN | 10.65s | | 6. Idrissa Sanou | BKF | 10.67s | | 7. Florent Nedingam | CHA | 10.91s | | -. Thomas Sanda | SLE | DNS |
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