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A Russian team ran 3:18.82 in Beijing in 2008 but the performance was annulled due to the use of performance-enhancing drugs by Tatyana Firova The quartet of Justin Robinson, Rosey Effiong, Matthew Boling and Alexis Holmes came home in 3:08.80 ahead of Great Britain, who won silver, and bronze medallists Czechia (Czech Republic). A USA team of James Davis, Jerome Young, Milton Campbell and Tyree Washington originally won in the 2003 World Indoor Championships, but was disqualified after Young was found to have used performance-enhancing drugs. [40] Jarmila Kratochvílová ( CZE) ran a 47.6 split in the 1982 Athens European Championship final, a 47.75 split in the 1983 Helsinki World Championship final, and a 47.9 split in the 1983 Europa Cup in London.

Note: The IAAF rescinded a time of 2:54.20 set at Uniondale on 22 July 1998 by the United States ( Jerome Young, Antonio Pettigrew, Tyree Washington, Michael Johnson) on 12 August 2008 after Pettigrew admitted to using human growth hormone and EPO between 1997 and 2003. [3] Men's Indoor World Record [4]A USA team ran 2:56.35 in Sydney in 2000 but the performance was annulled due to the use of performance-enhancing drugs by Antonio Pettigrew

x 400m Mixed Relay Heat 1 - 2020 Olympics" (PDF). Archived (PDF) from the original on 30 July 2021. According to the IAAF rules, world records in relays can only be set if all team members have the same nationality.a b c d "Mixed 4 x 400 Metres Relay - Round 1 Results Summary" (PDF). World Athletics. 19 August 2023 . Retrieved 19 August 2023.