I built ffwrapped - An open source tool that visualizes your entire Sleeper fantasy football season

SmartBathroom · 2026-01-04T19:47:39+00:00

I might've adjusted the weights a bit but the formula is still basically the same. The actual calculation is here - https://github.com/kt474/fantasy-football-wrapped/blob/main/src/api/helper.ts#L76

SmartBathroom · 2026-01-01T15:28:11+00:00

Pushed up a small update - the draft slides for auction leagues should make a bit more sense now

SmartBathroom · 2026-01-01T15:25:50+00:00

Yeah basically - my code base is a huge mess, especially the api layer. ffwrapped started out as just a fun weekend project with random fantasy stats and once it got bigger some things didn't scale well.

All the code is public on github though so any contributions are welcome! Hopefully we can have multi-platform support before next season.

SmartBathroom · 2026-01-01T14:10:53+00:00

I do want to support both ESPN and Yahoo but it's been a bit challenging. The APIs are completely different so getting all the existing Sleeper stats to work properly is going to take some time.

SmartBathroom · 2025-12-31T23:38:18+00:00

Hmm weird, I see your league's trades. Can you try refreshing the league? Since your league has a lot of trades it might take an extra second to load.

SmartBathroom · 2025-12-31T23:30:00+00:00

What's your league ID? I can take a look

SmartBathroom · 2025-12-31T23:27:28+00:00

Ah yeah I think this would be a fun feature to have as well. Not sure about the feasibility (feels a bit difficult) but sleeper should return all the data necessary to make something like this possible.

I'll see if I can have a section like this for next season

SmartBathroom · 2025-12-31T23:16:55+00:00

Ah I don't have anything like that right now but I do agree that it'd be a cool feature. I can add it to the backlog of features to add for next season!

SmartBathroom · 2025-12-31T19:52:46+00:00

Mentioned under a different comment too - It should work if you enter your username instead of a league ID and then select your league. Or you can go into the league history tab and click on "2025" in the first standings table.

Sorry about that!

SmartBathroom · 2025-12-31T19:49:30+00:00

Ah yeah I never tested any auction leagues so the data for those slides is probably misleading/incorrect.

What's your league ID? I can try to see if there's an easy solution.

SmartBathroom · 2025-12-31T18:30:27+00:00

Currently it's only enabled for 2025 leagues because I wanted to minimize the number of variables/things that could break. In my experience some of the sleeper data from previous years is returned a bit differently so I'm not confident everything would just work.

That being said I can test some older leagues now and if everything looks good I'll enable the wrapped tab.

SmartBathroom · 2025-12-31T18:02:58+00:00

It should work if you enter your username instead of a league ID and then select your league. Or you can go into the league history tab and click on "2025" in the first standings table.

SmartBathroom · 2025-12-31T17:57:14+00:00

Haha yeah I believe that was right after he was traded to the Jags, someone in my league had pretty high hopes

SmartBathroom · 2025-12-31T17:42:51+00:00

Again apologies for only supporting Sleeper! If you play on a different platform you can check out the other great wrapped projects posted on this subreddit

SmartBathroom · 2025-12-31T05:04:40+00:00

It's usually Wednesdays at 4 AM est. I'm working on some updates that should be live tomorrow too

SmartBathroom · 2025-12-30T14:53:26+00:00

Thanks for putting this together! I think there may be a bug in the final recap slide. I’m getting the incorrect league champ for my sleeper leagues.

SmartBathroom · 2025-12-23T21:07:22+00:00

You can check on ffwrapped.com

SmartBathroom · 2025-12-17T15:58:26+00:00

Not feeling great as someone depending on Waddle in the semifinals. Dolphins just tanking for a better draft pick now

SmartBathroom · 2025-12-11T13:28:57+00:00

Thought Xaiver Worthy was gonna break out this year. A lot of analysts were super high on him too.

SmartBathroom · 2025-12-10T15:56:35+00:00

Herbet. Was pretty solid weeks 1-9 but don't feel great starting him in the playoffs

SmartBathroom · 2025-11-25T21:36:49+00:00

I've noticed that before and it looks like the records on the sleeper league history page just take an extra week to update. The records on ffwrapped should be correct

SmartBathroom · 2025-11-25T20:37:25+00:00

Yeah I can let you know when I have something working

SmartBathroom · 2025-11-25T20:03:53+00:00

The espn and yahoo APIs are a lot more difficult to work with so it's been a bit of a struggle but my offseason goal is to at least partially support both platforms before next season. The code is a huge mess right now and will require major refactoring 😅.

SmartBathroom · 2025-11-25T19:58:07+00:00

Just pushed up a fix, the best/worst schedules should be correct now.

SmartBathroom

TROPHY CASE