Opta only provides "on the ball" data for soccer, I know that much, and will only provide it in 5 minute increments.

There is much more accurate data available in Premier League games via ChyronHego, but they don't make that available real-time, and in fact the only people who get to see it are the clubs who are involved in the game.

There is a big, big demand for better real-time tracking of open play sports such as Soccer. Discreate "round-based" play games (baseball, NFL, etc.) are much simpler in some respects.