A season may be created with an apparently invalid date such as Indoor 2035.
Golden Records manages seasons based on score dates and types. If an Indoor score is entered with an invalid year a Season will be created for that score. So if a score is entered with a date of 4/5/2052 a season will be created with a name of <score type> 2052.
To fix this correct the score date and then update the seasons table as described in Why Are Seasons "Unmatched"