Also, World Cross Country champion Bedan Karoki also dropped out of the trials. He had been nursing a hamstring injury which he sustained in March after bagging silver in the World Half Marathon.
Two time world 10000 bronze medallist Paul Tanui won the race to qualify for the Rio games after clocking 27:46:15. Tanui beat Africa Cross Country bronze medallist Charled yego who clocked 27:57:07 and also qualified.
It is however expected that Kamworor may be given a chance to compete in the Rio games even after falling sick during the trials.
Maureen Jelagat qualified for the 400 Meters hurdles after beating Jane Chege.