17

I usually find in reports like this (and many others) something like:

... with a TPR of 2551 ...

I would like to know its meaning, and also what it stands for.

21

It means Tournament Performance Rating.

Very roughly a TPR of 2551 means that the results this player has achieved in this tournament would have been expected of a player rated 2551.

That's always a bit problematic. Say you scored 100% against a group of 1500 players, what kind of player would have expected to score that? Well, a 1900 player probably, but also a 2800 player. And many methods make your TPR go down if you win against a much lower rated player, because they are based on the average rating of your opponents. But it's a rough measure of how well a player did.

There exist various methods to calculate it that I don't have time now to go into now.

  • 1
    The more varied the people in the tournament were, and the more varied your results were, the less reliable a metric it will be. And like all metrics (including, quite honestly, the typical rating) they should be taken with a grain of salt. – corsiKa Jan 29 at 17:48
  • A 1900 player actually has a 92% expected performance against a group of 1500 players, so if there is enough 1500 players the 1900 is not high enough. – blues Jan 30 at 16:53
12

"Tournament performance rating". An approximate measure of the strength that a player performed/played at in the tournament.

The calculation of such a performance rating varies, but one method is as follows:

  • If you beat someone at rating X, your performance for that game is X + 400.
  • If you lose to this person, your performance for that game is X - 400.
  • If you draw this game, your performance for that game is X.

Then the tournament performance rating is calculated by taking the average performance out of all your games.

  • 1
    Can this be summarized by this formula: avg. opponent rating + 400 * (number of wins - number of losses) / number of games? – Akavall Jan 29 at 20:05
  • 3
    @Akavall Yes, but that looks much more mysterious than the explanation given in the answer. – David Richerby Jan 29 at 20:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.