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                          |  Personal |  Notes about me Sito
                        in italiano Atletica leggera e-Constructor | 
                      
                        
                          |  |  
                          | OLYMPIC
STANDARD
                                  2023-2027: 45.00 |  
                          |  |  |  |  |  |  |  |  
                          | Age | Time | Name and Surname | Country | Year of birth | Year of record | See Chronology(click on the icon)
 |  
                          | 17 
 | 44.84 
 | Justin Robinson 
 | USA 
 | 2002 
 | 2019 
 |   |  
                          | 18 | 44.25 | Karabo
                            Sibanda | BOT | 1998 | 2016 |  |  
                          | 19 | 43.87 | Steven
                            Lewis | USA | 1969 | 1988 |  |  
                          | 20 | 43.85 | Randolph
                            Ross | USA | 2001 | 2021 |  |  
                          | 21 | 43.61 | Michael
                            Norman | USA | 1997 | 2018 |  |  
                          | 22 | 43.45 | Michael
                            Norman | USA | 1997 | 2019 |  |  
                          | 23 | 43.45 | Jeremy
                            Wariner | USA | 1984 | 2007 |  |  
                          | 24 | 43.03 | Wayde van Niekerk | SAF | 1992 | 2016 |  |  
                          | 25 | 43.56 | Michael Norman | USA | 1997 | 2022 |  |  
                          | 26 | 43.40 | Quincy Hall | USA | 1998 | 2024 |  |  
                          | 27 | 43.74 | LaShawn
                            Merritt | USA | 1986 | 2013 |  |  
                          | 28 | 43.39 | Michael
                            Johnson | USA | 1967 | 1995 |  |  
                          | 29 | 43.44 | Michael Johnson | USA | 1967 | 1996 |  |  
                          | 30 | 43.75 | M. Hudson-Smith | GB | 1994 | 2024 |  |  
                          | 31 | 43.68 | Michael
                            Johnson | USA | 1967 | 1998 |  |  
                          | 32 | 43.18 | Michael Johnson | USA | 1967 | 1999 |  |  
                          | 33 | 43.68 | Michael
                            Johnson | USA | 1967 | 2000 |  |  
                          | 34 | 44.89 | Liemarvin Bonevacia | NED | 1989 | 2023 |  |  
                          | 35 | 44.88 | Liemarvin Bonevacia | NED | 1989 | 2024 |  |  
                          | 36 | 44.47 | Isaac
                            Makwala | BOT | 1985 | 2021 |  |  |