You are saying that TR are only a statistical category you see after the game in the box score, did I understand you correctly?
For me, yes.
Match RatingsEach player that has played more than five minutes in a given match receives a rating, with 1 being the lowest. This rating is based on a combination of your player's stats and his overall contribution to the team effort. Note that this has nothing to do with the player's overall skill; if your worst player overall is the best on the court, he'll have the highest rating!Your team also receives several ratings per match. These team ratings are used in the calculation of what happens each possession.