Sanchez said the Kenya had displayed such potential by virtue of Nicholas Bett winning the 2015 world title in the 400m hurdles title and Boniface Mucheru winning for silver at last year 's Rio Olympic Games in the same race .
Sanchez hails from the Dominican Republic .
Sanchez , who hails from the Dominican Republic , said the Kenya had displayed such potential by virtue of Nicholas Bett winning the 2015 world title in the 400m hurdles title and Boniface Mucheru winning for silver at last year 's Rio Olympic Games in the same race .