Tackles - any tackle after a change in possession 9. Sacks Allowed 2. Penalties - offsides, holding, etc. Tracing many of the 17 actions back to one lineman is subjective, and each statistic may not be mutually exclusive. If you thought that was complicated, keep in mind that running plays may shoot off in either direction.
Pass plays present a third option.
Imagine you're Coach Matsko, clipboard in hand, watching the game tapes. Mark each player with a plus when they successfully block their assignment and a minus when they don't. Then take the ratio of positives to the total. Then total them up for a single game. A series of sacks, penalties, or critical errors may have changed the game's result.