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Back to Ratings.

NASPA Rating Calculator

Enter all required information as indicated, then click on the Calculate button to see a player’s new rating after a tournament. If a player has not played fifty games in his or her career, their rating will change by a greater amount; this is taken into account if you specify the player by name and not by rating.

Players may earn feedback bonus points for playing opponents who earned acceleration bonus points: this tool does not perform this calculation. Tournaments of more than 16 rounds are split into segments and rated separately: the results computed here may be misleading because we assume all player wins come before losses, and opponent ratings will not be updated after each segment. If you need to perform more sophisticated computations, please use the tsh tournament management program.

Comments or questions concerning this tool should be sent to John Chew. A basic introduction to the rating system is also available on this web site.

Result will appear here.

Player

Enter the player’s name or rating.

Wins

Enter the number of wins, counting ties as 0.5 each.

Tournament Type

Ratings changes at Local Club Tournaments (LCTs) are one third of the changes at Open Rated Tournaments (ORTs).

Opponents

Enter opponent names or ratings. Names must be entered on their own line and exactly as shown in the ratings list (last name first); multiple ratings may be entered on a line. If the player played someone more than once, enter their name or rating once for each time they played them.

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