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. Yoshiaki Oikawa
Decathlon 2000 has pretty much everything you could want to know about decathlon. Whenever I go to a decathlon, you can be sure that I’ve got a sheaf of Decathlon 2000 athlete profiles printed, tabbed, and highlighted in my notebook - Gabby Pieraccini