For the third year in a row, Caster Semenya was undefeated but was this the last of her dominance?  Domestically, Ajee Wilson was the best of a strong group of US runners. Should US#3 Ce'Aira Brown be ranked in the world's top 10?

The final Prefontaine Classic at the original Hayward Field didn't disappoint in terms of the women's distance events the women's 800, 1500 and 5000 all produced a world leading time.

Ken Goe's article reveals Niyonsaba got malaria while training with the OTC in South Africa this winter but somehow still managed to win world indoors. The OTC refused comment on the new hyperandrogenism rules.

Can Ajee Wilson get the elusive gold medal? How does Raevyn Rogers do? Does Niyonsaba stay undefeated lifetime indoors?

Semenya specifically requested that the meet run the 600 instead of the 800 and she may go for the 20-year-old WR of 1:22.63 while facing world silver medalist Francine Niyonsaba. Other world champions include Phyllis Francis, Ramil Guliyev, Dafne Schippers and Sam Kendricks vs Renaud Lavillenie.

With $100,000 on the line per event, Thursday's action should be spectacular.

Francine Niyonsaba and Ajee Wilson threw the best challenge at her they could, but in the end Caster Semenya was just too good and took her third world title (fifth global gold) in a PB and NR of 1:55.16.

Will South African Luvo Manyonga, perhaps the hottest athlete in the world right now, break the long jump world record? How will Asbel Kiprop look in his first DL race since finishing last at Pre?

Elijah Manangoi headlines the 1500, all of Rio medallists in the women's 800 will clash, and 16-year-old sensation Jakob Ingebrigtsen will race in front of the home fans in the "Dream Mile" which is being set up just for him. *IAAF preview.