| W | World | 36.84 | Carter, Frater, Blake, Bolt | JAM | 8/11/2012 | London, ENG |
| A | American | 37.38 | Demps, Patton, Kimmons, Gatlin | USA national team | 8/10/2012 | London, ENG |
| C | College Outdoor | 38.04 | Howard, Holloway, Williams, Spencer | T.C.U. | 6/5/1998 | Amherst, NY |
| PL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Pts | HPL | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Oxford (MS) | A | 43.06 |
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10 | 1 (1) | |||||
| 2 | Olive Branch | A | 43.26 |
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8 | 1 (2) | |||||
| 3 | Amory | A | 43.73 |
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6 | 2 (1) | ||||||
| 4 | Picayune | A | 43.80 |
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5 | 1 (3) | |||||
| 5 | Desoto Central | A | 43.99 |
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4 | 1 (4) | |||||
| 6 | Oxford (MS) | B | 44.23 |
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3 | 1 (5) | |||||
| 7 | Corinth | A | 44.56 |
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2 | 2 (2) | |||||
| 8 | W. Tallahatchie | A | 45.21 |
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1 | 2 (3) | |||||
| 9 | Lake Cormorant | A | 45.98 |
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2 (4) | ||||||
| 10 | Independence | A | 46.01 |
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2 (5) | ||||||
| 11 | Simmons | A | 47.45 |
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2 (6) | ||||||
| 12 | Senatobia | B | 47.70 |
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1 (6) | ||||||
| Senatobia | A | DQ |
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| HPL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Pts | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | OXFORD (MS) | A | 43.06 |
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10 | |||||
| 2 | OLIVE BRANCH | A | 43.26 |
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8 | |||||
| 3 | PICAYUNE | A | 43.80 |
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5 | |||||
| 4 | DESOTO CENTRAL | A | 43.99 |
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4 | |||||
| 5 | OXFORD (MS) | B | 44.23 |
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3 | |||||
| 6 | SENATOBIA | B | 47.70 |
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| SENATOBIA | A | DQ |
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| HPL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Pts | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | AMORY | A | 43.73 |
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6 | ||||||
| 2 | CORINTH | A | 44.56 |
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2 | |||||
| 3 | W. TALLAHATCHIE | A | 45.21 |
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1 | |||||
| 4 | LAKE CORMORANT | A | 45.98 |
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| 5 | INDEPENDENCE | A | 46.01 |
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| 6 | SIMMONS | A | 47.45 |
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