The World Athletics Ultimate Championships will see notable absences due to injuries and illness. U.S. hurdler Tara Davis-Woodhall and Kenya’s Lilian Odira will miss the event. Davis-Woodhall suffered a concussion in a car accident, while Odira struggles with ongoing health issues.

U.S. sprinter Noah Lyles also announced his withdrawal due to a hamstring strain. Despite being listed for both events, Norwegian Jakob Ingebrigtsen may only compete in the 5,000m. The championships start on Sept. 11 with a $10 million prize purse. Read more racing coverage.

Davis-Woodhall shared her decision on Instagram, citing health concerns. Odira expressed disappointment on social media, unable to recover from her illness. Lyles’s injury flared up after the USA Track and Field Championships, forcing him to end his season. Related: Olympic Long Jumper Davis-Woodhall Ends Season After Car Crash.

This original Runner World brief is based on reporting from Canadian Running. Visit the source for its complete reporting, context and any later corrections.