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?

Millrose was full of fantastic performances across the board from a 300 WR to a 3000 collegiate record for Karissa Schweizer. Plus a blowout victoy for Chris O'Hare in the Wanamaker Mile.

Oh baby. We hope you are ready. Indoor track is BACK in a BIG WAY with action all over the US. In Boston, American Shadrack Kipchirchir wants to run the low 7:30s in the same race where the LRC singlet will be looking for a big PB. In NY, Ajee Wilson and Charlene Lipsey go for the AR and Robby Andrews and Clayton Murphy clash over 800.  In Seattle, these big names will be racing - Galen Rupp, Yomif Kejelcha, Shalane Flanagan, and Sifan Hassan. Plus marathoners Scott Smith & Aaron Braun chase sub-4:00.

Murphy vs Andrews and Erik Sowinski over 800 should be a great race. *Pro Fields *Live Results *Schedule

Craig Engels is in the men's mile and Ajee Wilson and Charlene Lipsey in the women's 800. Courtney Okolo leads the springs, Ryan Whiting the throws and NCAA champs Karissa Schweizer and Ariana Washington are also competing.

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

Are you recovered from Worlds and ready to watch some more great track action? We hope so as Saturday's meet in Birmingham is pretty darn interesting. America's steeplechase heroes Emma Coburn and Courtney Frerichs will battle in a flat 3000 as Jenny Simpson tries to qualify for the DL final in the 1500. Plus Clayton Murphy and Robby Andrews try to shine on their comebacks from injury. *MB: Are you ready for some more track? Birmingham DL looks like fun - Simpson, Frerichs, Coburn, Murphy, Andrews, & more

Lipsey is one of the best in the World right now.

The 2017 IAAF World Championships are less than a month away, but if you can't wait until then, consider Sunday's Müller Anniversary Games a preview. Sunday morning's action (9-11 am ET) will be fantastic as the meet features many of track and field's biggest stars including Mo Farah, Allyson Felix, Laura Muir, Fred Kerley, Elaine Thompson, Keni Harrison and Mariya Lasitskene. The men's 800 is unreal with Donavan Brazier, Emmanuel Korir, Asbel Kiprop, Nijel Amos and Adam Kszczot. The women's mile is almost as good as Muir takes on Jenny Simpson, Kate Grace and Hellen Obiri. Farah faces Eric Jenkins, Ryan Hill and Hassan Mead in the men's 3000.

You'd never know that Ajee Wilson hadn't raced in nearly four months prior to USAs as she was in the form of her life today as she took home the women's 800 crown and sent a warning shot to Caster Semenya, Maragaret Wambui and Francine Niyonsaba.

The coach of America's best 800 runner reveals that he and Wilson "didn’t have a clue what zeranol" was before her positive test. Thompson also says Wilson is in great shape and he hopes she breaks the American record in Monaco.