Answers.Body: <p>"Tournament performance rating". An approximate measure of the strength that a player performed/played at in the tournament.</p>
  
  <p>The calculation of such a performance rating varies, but one method is as follows:</p>
  
  <ul>
  <li>If you beat someone at rating X, your performance for that game is X + 400.</li>
  <li>If you lose to this person, your performance for that game is X - 400.</li>
  <li>If you draw this game, your performance for that game is X.</li>
  </ul>
  
  <p>Then the tournament performance rating is calculated by taking the average performance out of all your games.</p>
  
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Answers.CreationDate: 2019-01-29T20:05:00.283Z
Answers.Text: Can this be summarized by this formula: `avg. opponent rating + 400 * (number of wins - number of losses) / number of games`?
Answers.UserDisplayName: Akavall
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Answers.Text: @Akavall Yes, but that looks much more mysterious than the explanation given in the answer.
Answers.UserDisplayName: David Richerby
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Answers.UserDisplayName: Inertial Ignorance
Answers.Body: <p>It means <a href="https://en.wikipedia.org/wiki/Glossary_of_chess#Performance_rating" rel="noreferrer">Tournament Performance Rating</a>.</p>
  
  <p>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.</p>
  
  <p>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.</p>
  
  <p>There exist various methods to calculate it that I don't have time now to go into now.</p>
  
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Answers.CreationDate: 2019-01-29T17:48:24.527Z
Answers.Text: 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.
Answers.UserDisplayName: corsiKa
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Answers.Text: 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.
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Answers.UserDisplayName: RemcoGerlich
Body: <p>I usually find in reports like <a href="http://www.chessgames.com/player/wei_yi.html" rel="noreferrer">this</a> (and many others) something like:</p>
  
  <blockquote>
    <p>... with a <strong>TPR</strong> of 2551 ...</p>
  </blockquote>
  
  <p>I would like to know its meaning, and also what it stands for.</p>
  
Tags: <rules><tournament>
Title: What does "TPR" mean in chess tournament reports?
ThreadText: # What does "TPR" mean in chess tournament reports?
  
  (Asked by: username_0 on 2019-01-29)
  
  I usually find in reports like [this](http://www.chessgames.com/player/wei_yi.html) (and many others) something like:
  
  > ... with a **TPR** of 2551 ...
  
  I would like to know its meaning, and also what it stands for.
  
  **Tags:** rules, tournament
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_4 on 2019-01-29. Score: 23 | Accepted answer
  
  It means [Tournament Performance Rating](https://en.wikipedia.org/wiki/Glossary_of_chess#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.
  
  > **Comments:**
  > **username_5**: 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.  
  > **username_6**: 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.  
  
  ---
  
  ### Answer by username_1 on 2019-01-29. Score: 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.
  
  > **Comments:**
  > **username_2**: Can this be summarized by this formula: `avg. opponent rating + 400 * (number of wins - number of losses) / number of games`?  
  > **username_3**: @username_2 Yes, but that looks much more mysterious than the explanation given in the answer.  
  
  ---
  
  