Came across these two projects while searching for something completely different. Python anyone.
First is a Ping Pong clock, I reckon this is probably doable as you just need to connect the LED matrix boards to a PI. Then write the software to keep the score.
The second is really cool, might be doable. Though I think the PI would end up being the master controller rather than using individual PIs for each display matrix. The project is called GLiP. It has also branched off into this project as well.