Awesome job, man! As an aspiring statistician I love what you've done.

As for the GA/TA stuff ... in the sim there are two situations in which it says someone has lost the puck:

"Player X is hit by Player Y and [Player X] loses puck" ... "Free Puck Retrieved by Player Z for [Player Y+Z's Team]"

In this situation, you don't know explicitly who's taken the puck. Whether you'd award it to Player Y or Player Z, I'm not exactly sure from a scoring standpoint. Maybe someone can help me there. Player Y and Player Z can be the same in some situations, too.

"Pass by Player X intercepted by Player Y"

More obvious situation.