I have a graphical suggestion regarding the in-game scoreboard.
The last part where we can see the points (15, 30, 40, AD) should not be separated by a blue line. I think the two digits as well as "A" and "D" always belong together, aren't they?
Another idea is the insertion of additional information during the game. The information about break-, set- and match-balls is great. I thought about some statistical information during game. Something like
+ Fastest serve (if the last serve was really the fastest serve)
+ Third Ace (if the last serve was the third ace)
+ Unforced Errors: (R.Federer) 12
+ Winners: (R.Nadal) 21
+ First Serve Points: (O.Rocchus) 15/20 (75%)
It would be nice too, if one could see some serve stats like where the serves hit the ground. This ideas basically come from the Live-Scoreboard of the real-world tennis tour. Already seen it?
Let me know your opinions.