Here is what Simms sent to Chicago Marathon organizers. No word on Mo Farah, whom Simms also represents (he hasn't been brought through media area in Chicago).
"Galen DNF’d due to a calf strain. It started tightening up after 6 miles, he kept going but by the 23rd mile was unable to run any further and had to stop.
"Jordan felt a sharp pain in her hamstring after 2 miles and had to stop. She stretched and tried to go again but was unable to run."