Former Olympic medallist Brendan Foster has claimed that Mo Farah could go on and become the greatest long-distance runner of all time after his 10,000m gold medal at the World Athletic Championships.

Farah held off the challenge of Kenya's Geoffrey Kamworor to defend his title after a sprint finish.

Foster told BBC Sport: "That was a great race. Mo Farah was tested, but he followed every move. It was a fantastic performance. The Mo Farah we know and love is celebrating.

"It was an absolute pleasure to watch that race. He might end up being regarded as the greatest distance runner there's ever been."

Farah won two Olympic golds in 2012, and has also won four world championship golds and five European Championship golds.