Short version: paste your NFL.com league ID into The Sunday Chronicle at thesundaychronicle.app. We walk every season your league has played on NFL.com and turn the whole history into a public almanac — champions, drafts, every matchup, head-to-head records, and rivalries. No sign-in needed; NFL.com exposes league data publicly behind the league ID.
Where to find your NFL.com league ID
Open the league in a browser. The URL looks like:
fantasy.nfl.com/league/1234567
The digits at the end are your league ID — typically 7 digits for newer leagues, sometimes shorter for older ones. In the NFL Fantasy mobile app, tap the league name to open the share menu and the league ID is in the share link.
Why NFL.com is easy to archive
Unlike Yahoo (which gates league reads behind OAuth), NFL.com's league data is publicly readable by anyone who has the league ID. That means the import is as light as Sleeper's — paste the ID, the rest is automatic. You don't need to be the commissioner. You don't need to be a current member. The only thing the commissioner's account is needed for is publishing the almanac to a public URL after the import finishes.
What you'll see in the almanac
Once the import finishes, the public almanac at thesundaychronicle.app/leagues/your-league/ gives every league member a single URL to bookmark — with:
Champion rolls — every season, every title game, every runner-up.
Standings archives — final standings for every year the league has run.
Draft boards — round by round, every year, every pick.
Manager dossiers — career records, championships, head-to-head against every rival.
Rivalries — hand-pick the feuds that deserve their own page, with running scoreboards and meeting logs.
Migrating between NFL.com and other platforms
Many long-running leagues started on NFL.com or Yahoo and migrated to Sleeper or ESPN over the years. You can connect multiple sources to a single archive and we'll stitch the eras together by manager identity. See migrating between platforms for the full workflow.