Here's a deep compilation for 1st and 2nd day scores at decathlon competitions, which would cover whole competitions even dnf or disclaimer results. I would as always welcome any additions not in the lists.
2021 in Frankfurt Jente Hauttekeete breaks heptathlon world junior record with 6062 points. With 6259 points, he equals the Belgian heptathlon record set by Thomas van der Plaetsen in 2014.
Oleksandr Apaichev achieved a personal best of 8709 points during a dual meet between the Soviet Union and East Germany in Neubrandenburg in 1984. This score remains the Ukrainian national record. After retiring from competitive athletics,
Francisco Javier Benet secured his place in Spanish athletics history with an impressive 8526-point decathlon in 1998, keeping him at the top of the national all-time list.
After retiring as a decathlete, Andrei Nazarov started coaching. He has coached decathletes Erki Nool, Janek Õiglane, heptathlete Larissa Netšeporuk and long jumper Ksenija Balta.