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
This handy combined events points calculator allows you to calculate both of men's and women's decathlon, heptathlon and pentathlon scores. Also adjust for junior competitions.
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