A new tool is available for uploading a custom image for your team logo in our live full games (Fantasy Hockey/Basketball/Baseball). You can use it on your 'Edit Team Settings' page or during your registration in baseball.
See the help page, linked below the custom 'Edit Custom Image'... In the first image, the first button you see, outlined in red on the left, is the radio button. It will automatically select for you if you click the 'Edit Custom Image' button.