I do this for our local hockey team, only I do this all in DashBoard instead, as the JavaScript gives me more options when it comes to setting up the parameters to be sent accross DataLinq, though I guess the logic would be much the same.
If the scoresheet says "team1", you would store an image in the assets folder that is names "team1.png".
What you would need to do in visual logic is to grab the value from the scoresheet, and add ".png" to the end of that variable.
#XPression