TALENCE (FRANCE): World champion Kevin Mayer set a new world record in the decathlon with 9,126 points at the Decastar meet on Sunday to eclipse Ashton's Eaton previous mark of 9,045.
The Frenchman threw a personal best of 71.90 metres in the javelin in the penultimate event to leave him with the relatively simple task of needing to finish inside 4 minutes 49 seconds in the 1500 metres.
The 26-year-old cruised home in 4:36 to become just the third decathlete to surpass the mythical 9,000-point barrier, joining double Olympic champion Eaton and Czech icon Roman Sebrle.
"That was an incredible display of ability! I'm super happy for @mayer_decathlon & even more for the future of the decathlon," tweeted American Eaton, who retired from athletics last year.
"Important thing to me has always been to keep pushing the limit and inspiring others to do the same. The more 9k can become commonplace the better."
The 26-year-old Mayer missed out on adding the European title to his world crown and Olympic silver medal when he failed to register a mark in the long jump in Berlin last month.
But he put that disappointment well and truly behind him on the opening day on Saturday with personal bests of 7.80m in the long jump and 10.55sec in the 100m.
A shot put throw of 16m, then 2.05m on his third and last effort in the high jump and a 400m time of 48.42sec earned him a total of 4563 points at the midway stage.
Mayer opened Sunday with 13.75sec in the 110m hurdles and threw a whopping 50.54m in the discus before excelling at the pole vault in front of a partisan crowd.