If all athletes in history took a time machine to compete in one championship track meet, these would be the results (limited to 3 athletes per country):
Women's 400m Final:
1 Marita Koch GDR 48.08
2 Jarmila Kratochvilova CZE 48.54
3 Olga Bryzgnina UKR 48.69
4 Sanya Richards-Ross USA 48.87
5 Marie-Jose Perec FRA 48.91
6 Tatana Kocembova CZE 49.01
7 Ana Guevara MEX 49.15
8 Cathy Freeman AUS 49.21
Previous Event Medalists:
Mens:
100m: G - Usain Bolt JAM; S - Tyson Gay USA; B - Yohan Blake JAM
200m: G - Usain Bolt JAM; S - Yohan Blake JAM; B - Michael Johnson USA
400m: G - Michael Johnson USA; S - Wayde van Niekerk RSA; B - Jeremy Wariner USA
Womens:
100m: G - Florence Griffith-Joyner USA; S - Marion Jones USA; B - Carmelita Jeter USA
200m: G - Florence Griffith-Joyner USA; S - Merlene Ottey JAM; B - Marita Koch GDR