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 800m Final:
1 Pamela Jelimo KEN 1:54.80
2 Caster Semenya RSA 1:54.91
3 Jarmila Kratochvilova CZE 1:55.03
4 Nadezhda Olizarenko UKR 1:55.22
5 Ana Fidelia Quirot CUB 1:55.39
6 Maria Mutola MOZ 1:55.41
7 Olga Mineyeva RUS 1:55.60
8 Sigrun Wodars GDR 1:55.88
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
800m: G - David Rudisha KEN; S - Wilson Kipketer DEN; B - Joaquim Cruz BRA
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