Well you are going to have to write a pc app or find one that will work for you. I'm sure ESPN or one of those stations has an RSS feed and there are examples on how to parse RSS in virtually every language. You'll have to send the data via straight serial port writing or one of the internet protocols and again, you shouldn't have any problems finding examples of that. ON the Arduino end things are extremely simple. You put a Serial.begin(9600) at the beginning of your code and somewhere in your processing loop put a Serial.readStringUntil(',') to read any serial data until the first comma and perform a case statement on that first bit. When you are sending data to the Arduino send it separated by commas, like:
"digit0,0" to set the first digit to 0, ect. You can parse as many variables as you wish after the function name by just repeating the readstringuntil command.
I can't write it for you though because Arduino does things differently and if you want to learn you really need to figure out the bits and pieces yourself. I hope that helps you some.