To delete all fixtures for a particular season at a particular league, do the following:
- Click "Fixtures/Bookings"
- Click "List fixtures by League, enter quick results and update statistics"
- Select the venue, league, season and if applicable, division that you want to delete fixtures for
- Check the checkbox in the header of the fixtures table. This will cause the checkboxes next to all the fixtures to become checked.
- Click "Delete" and when the system asks "Are you sure you want to delete these fixtures", click OK
Note that there is no undo when deleting fixtures, so make sure you have checked the checkbox next to only those fixtures you want to delete.