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Ashton Eaton, an American decathlete, improved his own world decathlon score record in 2015. He won the gold medal at the World Championships in Beijing with a score of 9,045 points, breaking his previous record of 9,039 points set at the 2012 Summer Olympics. Eaton is considered to be one of the greatest decathletes of all time, and his record is likely to stand for many years to come.