He won the 5,000 metres at the 1991 world outdoor championships in Tokyo .
He finished a disappointing fifth in the event at the1992 Olympic Games in Barcelona , which took place shortly after he developed sciatica .
He won the 5,000 metres at the 1991 world outdoor championships in Tokyo , but he finished a disappointing fifth in the event at the1992 Olympic Games in Barcelona , which took place shortly after he developed sciatica .