dont have a clue
Michael Johnson.
YES
Michael Johnson
Michael Johnson.
Wariner's best time is 0.27 seconds of Michael Johnson's World Record. since then he has not tuned himself to show that he can post a time like that again.
By swimming faster.
Butch Reynolds of the United States who ran a 43.29 in 1988. Johnson broke that record with a 43.18 in 1999.
The men's 400m world record was set by Wayde van Niekerk from South Africa with a time of 43.03 seconds on August 14, 2016, at the Rio Olympics.
The current men's world record for the 400m sprint is 43.03 seconds, set by Wayde van Niekerk of South Africa on August 14, 2016, at the Rio Olympics.
43.18 Michael Johnson (USA).
Michael Johnson's 300m split in his 43.18-second 400m dash world record was around 31-32 seconds.
One African American male who holds a T&F world record is Michael Johnson in the 400m dash.