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Great Britain's men make mess of 4x100m relay ahead of London 2012 | Olympics 2012: athletics | The Guardian
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United States holds on in final stretch for win over Jamaica in women's 4x100-meter relay in World Athletics Championships - oregonlive.com
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Tokyo 2020 - Great Britain set to be stripped of 4x100m relay silver medal after CJ Ujah's 'B' sample tests positive - Eurosport
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Oregon's Kemba Nelson, Jenna Prandini help their women's 4x100 relay teams advance at World Athletics Championships - oregonlive.com
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Florida's record-breaking 4x100-meter relay at 2019 NCAA Outdoor Track & Field Championships - YouTube
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