Hello and thank you for using The Best Ball Analyzer, the best Underdog NFL Best Ball portfolio analyzer that's completely free. We do not store any of your data since it stays only on your browser. To use the Analyzer, first you need to upload your Underdog draft data CSVs that you can have sent to your email from Underdog's website. To do this:

• Log in to your Underdog Fantasy account through the desktop website.
• On the main page go to the Completed tab and then choose from the NFL contests you have entered, such as NFL 2026 Season, NFL 2026 Superflex Season, and others.
• Once you choose one you will see an Email exposure CSV button, so click on that next.
• This will send an email to your registered account with a text file which contains all of your Underdog draft data for that particular type of contest. You can download one CSV per day for each contest type, and then upload up to 10 different CSVs into this tool.
• Check your email and you should have something from Underdog with a link which will automatically download the file.
• For convenience sake you can rename the file to the type of NFL contests it corresponds to so that you avoid confusion when ready to upload to the tool.
• Once you have all your CSVs then it's time to upload them into The Best Ball Analyzer to generate all that sweet sweet data.
• You can either click the browse button and upload your files that way, or drag and drop them right onto the upload button itself.
• To use the ADP/Projections tab you will need the corresponding ADP rankings that Underdog also provides to the user.
• Go back into your Underdog account to retrieve these by clicking the Rankings tab on the top of the page, and then by choosing NFL from the left panel.
• Then find the type of contest you want the rankings for by choosing from the Slate list that populates underneath.
• Finally click CSV Upload/Download and click the CSV download button on the top right part of the screen.
• This will automatically download the current Underdog ADP rankings to your computer which you can then upload to the ADP/Projections tab of the tool to receive full functionality.
• You will also have to re-upload your Underdog data which corresponds to those type of rankings since different styles of contests could have vastly different ADPs.

Thanks again for giving this free application a shot, and feel free to email me if you have any questions or concerns. You can find a link to my email address at the bottom of the page.