What The wrote:
Apparently he'll miss the Chicago Marathon after stepping in a pothole (one of several near the start of the course) at the Crim Ten-Mile in Flint. I know Flint has bigger problems, but for a race like Crim, there shouldn't be potholes on the course
https://www.runnersworld.com/news/a28834438/chris-derrick-discusses-ankle-fracture-at-crim-10-mile/?utm_campaign=socialflowFBRW&utm_source=facebook&utm_medium=social-media&fbclid=IwAR1uZ8WJr_tOlm_Bi3G7QU6yLF_pUYMHmO2ceegm6CUXdR_w0a2KR-XO0kM
Potholes have always been a problem at the Crim 10 miler.
1981 Herb Lindsay killing it on the potholes.
https://imgur.com/J2g57wK