The Reliability Score measures a player's progress toward reaching a reliable rating based on their match history and connectivity to the broader DUPR population. A player's Reliability Score is calculated as a percentage between 1 and 100 and shows how reliably a player's rating represents their current skill level.
Each player will have separate Reliability Scores for singles and doubles. These scores will be displayed alongside, but in smaller font than the main DUPR rating. Changes to your Reliability Score do not directly affect your DUPR Rating.
The following image shows how the reliability score is displayed on a player's profile.
Players can use the Reliability Score to contextualize the ratings of their partners and opponents. Clubs often use it as a threshold for event eligibility to ensure players have a good, competitive experience. Reliability Score also determines eligibility for club ranking lists and overall rankings on DUPR.com.
How is it calculated?
The formula takes into account factors such as the number of matches played (and the match source), plus the variety of partners and opponents over the last 6–12 months.
How does it change over time?
Your Reliability Score will gradually increase as matches are added to your profile. It begins to decrease after an extended period with no matches played.
To improve your Reliability Score more effectively in the future, we highly recommend uploading matches on a consistent basis and participating in club and tournament events whenever possible. Matches submitted by a club or verified data partners provide the algorithm with higher-confidence data and help build a stronger Reliability Score over time than self-posted matches.
Note: The Reliability Score will be updated every Tuesday on a weekly basis. Therefore, if you play your first matches on a Wednesday, your reliability score will not be reflected in your profile until Tuesday of the following week.
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