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Underdog Exposure and Overlay Tool

A Chrome extension that overlays your exposure percentages, highlights teammates, and stack tracking directly onto Underdog Fantasy draft boards.

Step 1: Download the Extension

Download the latest .zip file and unzip it to a folder on your computer. 

 

Step 2: Open Chrome Extensions

Open Google Chrome

Type chrome://extensions in the address bar and press Enter

Toggle Developer mode ON (top-right corner of the page)

 

Step 3: Load the Extension

Click "Load unpacked" (top-left)

Find the folder

Click "Select Folder"

You should see "Underdog Exposure Overlay" appear in your extensions list with a small icon.

 

Step 4: Pin the Extension -

Click the puzzle piece icon in Chrome's toolbar, then click the pin icon next to "Underdog Exposure Overlay" so it's always visible.

 

How to Use

Go to your Underdog Fantasy exposure page (My Drafts → Exposure, or navigate to any exposure URL)

Click the extension icon in your toolbarClick "Scrape This Page"

You'll see a green confirmation toast: "✅ 247 players" (or however many you have)

Tip: You can re-scrape anytime to update your data. New players get added to your existing data — nothing gets overwritten.

 

Once you've scraped your exposure data, just join any Underdog draft as normal. The overlay activates automatically. Should work for all sports but give me a shout if you have any feedback

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