In the latest update to Buzz Bot, the siri style IndexGain bot, you can now ask Buzz to show you the media buzz and performance buzz scores in around 1 second for any particular match day or date as far back as 14th June (start of World Cup).
Just type /igscores yesterday and Buzz will show you the PB and MB scores from the previous day.
You can also type in /igscores 10th August say in a few weeks time and revisit the above report right on your mobile from inside the IndexGain Slack app.
The report for each match day will be automatically added to the #chat channel at the end of each match day. But you can run the report ad-hoc when you want to see historical reports.
For a full list of commands please see this Buzz Bot Commands page.