Errata

General

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If you do not have a profile yet on rewind.lol, go to the home page and add your current username to the queue.
If your username changes while you are in the update queue, use your new username to lookup the profile once it has processed. Changing your username while in the queue will not cause you to lose your place in queue.
If your username changes while you are in the update queue and it becomes your turn, your new username will be uploaded as a profile on rewind.lol. Use your new username to look up your profile after it has been processed.
If your username changes and you already have a profile on rewind.lol, continue to use your old username on rewind.lol for lookups. When you want to update your profile again, you will need to go to the home page and add your current/new username to the queue.

We have recently started storing match data for historical purposes.
If you don’t want to have gaps in your data, you will need to update your profile at least once every 1000 matches or 2 years, whichever is sooner.
The data retention policy set by Riot is: 1000 most recent matches, up to 2 years old.
In the near future, we will begin to delete matches older than 2 years.
1. The only exception to this policy is for Patreon subscribers. If you are subscribed on Patreon, your matches will be saved indefinitely.
If we already have a match-v4 version of a match stored in our database, we will use that instead of downloading a match-v5 version. However, match-v5 contains new data that is not available in v4 so mixed versions of data will cause some fields to appear as if they are missing data. Here is a list of impacted statistics:
- Champions Tab:
  - D, F, Q, W, E, R spell activations
  - Ally shielding

Generated full-history profiles may expire after becoming 365 days old.
Generated single-year profiles may expire after the next calendar year arrives.
We do not guarantee support for expired profiles. We do not guarantee retention of expired profiles.
Generally speaking, single-year profiles can only be added/updated once. Exceptions to this policy will be reserved for Patrons only.
We do our best to collect (and retry collecting) all match data, but due to Riot API’s high error rate, we’ll generate the profile anyway if less than 10% of the matches can’t be processed.
Due to stale caches, a profile that is visited, updated, and revisited within a short period of time may continue to display old data for up to 10 minutes after the profile is processed in the update queue. If you are seeing old data after your profile has been processed, try waiting a few minutes and then refresh the page.
For a summoner that has no match history for the past 2 years, a profile will not be generated and no error message will be displayed. This is currently the intended behavior. If a profile you’ve submitted to the update queue has reached the front of the queue but can’t be found using the “lookup” button after it’s been processed, this means the profile can’t be generated (usually due to a lack of data).

Friend usernames may be outdated. Clicking on a friend’s old username to attempt to view their profile will not lead to the new username.

Vision score per hour and Gold per minute use the duration of the game minus 1 minute. cs/min uses the full duration of the game.
Certain statistics like vision score per hour and average dragons are specific to Summoner’s Rift and will not be influenced by ARAM or other special game types. However, other more general statistics like KD or KDA will be influenced by ARAM and special game types EXCEPT for when a Summoner’s Rift lane icon is present.