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):
Men's 800m Final:
1 David Rudisha KEN 1:41.17
2 Wilson Kipketer DEN 1:41.61
3 Joaquim Cruz BRA 1:42.31
4 Nijel Amos BOT 1:42.41
5 Wilfred Bungei KEN 1:42.78
6 Johnny Gray USA 1:42.82
7 Sebastian Coe GBR 1:42.83
8 Abubaker Kaki SUD 1:42.84
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
400m: G - Marita Koch GDR; S - Jarmila Kratochvilova CZE; B - Olga Bryzgnina UKR