It was not a good day for the Olympic 100m champions as Fred Kerley showed up in the track in Puma spikes, never ran the 100m, and didn't have a sponsor at the end of the day, while Elaine Thompson-Herah suffered an injury in the women's 100.

The Pre Classic (4-6pm on NBC on Saturday) highlights the weekend but we also have NCAA regonals, and NAIA, NCAA D2 and D3 Nationals.

With just four weeks to go until the Olympic Trials, America and the world's best will descend on Eugene this weekend.

We break down the final regular season DL of the year where Jenny Simpson's 14-year old 3:59.90 US collegiate record fell by the wayside. Plus should Elise Cranny switch to the 1500?

tersRichardson only ran 11.29 but it came into a 2.0 m/s headwind in cool, wet conditions.

• Full Results - Sage Hurta and Yared Nuguse Also Win
• MB: Sha'Carri's back. Richardson takes down Olympic champ Elaine Thompson-Herah in Lucerne
• MB: Yared Nuguse wins in Lucerne, destroys Hocker in the process

El Bakkali held off Lamecha Girma to win the steeple as both men broke 8:00, but disaster struck in the 400 hurdles as Warholm said after the race he believes he tore his hamstring.

• MB: Official 2022 Rabat DL Discussion Thread
• MB: Karsten Warholm pulls up in Rabat -- grabs right hamstring after first hurdle
• MB: Katir is the most obvious doper of all time
• MB: Avinash Sable, INDIA runs monster 8:12.48 steeple in Rabat, behind Bakkali (7:58.28), and Girma (7:59.24).

From Elaine Thompson-Herah and Sha'Carri Richardson in the 100 to Jakob Ingebrigtsen and Cole Hocker in the Bowerman Mile, the world and America's best are all in Eugene this weekend.

There will be nine individual Olympic champs, with Puerto Rican hurdle star Jasmine Camacho-Quinn running in the final event of the night. Meet will be shown live on ESPN2 from 6-8 p.m. Thursday.

We recap the week in running for you and wonder why 2022 Boston is also planning to have a reduced size.

Francine Niyonsaba went 8:19 to become the 5th fastest even outdoors and Elaine Thompson-Herah kept her incredible 2021 going with a 10.72 win.

Warholm will run his first race since Tokyo and his first 400 of 2021. Is sub-44 in the cards? And how will Thompson Herah follow her 10.54 in Eugene on Saturday? Tune in on Thursday to find out.

Thompson-Herah was just .05 off FloJo's "world record." Jamaica swept the top-3 with SAFP (10.73) and Shericka Jackson (10.76) while Richardson was dead last in 11.14. Also a who's who of men's distance running over 2-miles and solid sprint results from Noah Lyles (200m) and Andre De Grasse (100m).

We recap the semis of the men's 400, women's 200, and women's 400m hurdles.

FloJo’s 33-year-old 10.62 Olympic record is gone as Thompson-Herah moved to #2 on the all-time list. Shelly-Ann Fraser-Pryce earned her 4th Olympic 100m medal by taking silver in 10.74.

Katir ran a Spanish record to beat Stewart McSweyn and assert himself as a medal contender in Tokyo, while Bromell rebounded from a loss in Monaco to soundly beat the men’s 100 field.

• Official 2021 Gateshead DL Discussion Thread
• Kate Grace DESTROYS Gateshead field in final 100, wins mile in 4:27.20.
• WTF Murphy and Hoppel?! - Isaiah Harris gets revenge and the win in Gateshead !
• Katir stays HOT - 7:27.64 Spanish national record for 3000.