Seeding sets the draw order. Eligibility decides who may enter a division. A rating can inform both, but they are different decisions: accepting a player into a rating band does not by itself determine that player's seed.
Use published criteria, the rating category appropriate to your event and a documented review process. Avoid changing seeds to manufacture preferred matchups.
How DUPR works
New DUPR players start NR (Not Rated). An initial rating can come from recorded results, a certified DUPR coach assessment or a supported AI assessment route. Creating an account does not itself assign a self-selected numerical baseline.
DUPR describes category-specific ratings, including singles, gender doubles and mixed doubles, and age-group ratings where applicable. Its calculation considers performance relative to expectations, match type, recency and volume. Use the category required by the event and confirm what your tournament platform displays. Official DUPR explanation, checked 15 October 2026.
Rating and Reliability Score answer different questions
A rating estimates playing level. The Reliability Score helps indicate whether the underlying results are sufficient and current. Review both, together with recent relevant results. There is no universal rule that a player becomes trustworthy after exactly 20, 30 or any other fixed number of matches.
An inactive player's old rating may be less representative, but inactivity does not prove the player has improved or declined. Do not automatically move returning players up or down on that assumption.
Publish the policy before registration opens
Your event rules should identify:
- The rating source and category used for each division.
- Whether a cap applies to each individual, the team's sum, or its average.
- The rating snapshot date or cutoff.
- How NR players and low-reliability ratings are reviewed.
- Whether assessment or qualifying results can be used.
- Who can approve an exception and how players can request review.
For doubles, a 4.2 + 3.8 pair has a sum of 8.0 and an average of 4.0. Sum and average give the same ordering for equal-size teams, but different cap numbers. Do not compare a sum with an individual-rating limit.
When a rating needs review
NR or limited recent results
Use the assessment or placement route described in your rules. A coach assessment, recent competition results or a published qualifying process can help. Self-rating can be useful context for a recreational event, but should not be presented as an official DUPR rating.
A different discipline
Singles and doubles are different events. Do not substitute one rating category for another without an explicit rule and a fair process for players whose relevant category is NR.
An apparent data error
Check the linked profile and recorded results before changing a seed. Record the issue and resolution. For already-submitted results, follow the current platform and DUPR correction process; a local score edit should not be assumed to update an external rating automatically.
An exception allowed by the rules
Document the objective evidence and apply the same standard to all entrants. Handedness, preferred playing style or a director's desire for a particular final are not objective reasons to alter seeding.
Other rating and placement methods
A recreational event may use self-rating, a club assessment or qualifying play. A sanctioned event may have its own eligibility and rating requirements. Consult the organizer's current rules instead of assuming one rating system applies to every sanctioning body.
Keep an internal club assessment distinct from a player's official external rating. Explain which one your event uses and why.
A practical seeding workflow
- Check that each entrant is linked to the correct profile.
- Apply the published rating cutoff and category.
- Review NR players, low reliability and documented data issues using the same policy.
- Calculate team sums or averages consistently.
- Sort the field and place seeds in the chosen bracket or pools.
- Record any approved exceptions and give players a defined review window.
- Confirm the final draw before play begins. Ask support before changes that could affect completed matches or downstream advancement.
For Fluid, watch bracket and pool setup and confirm the event's rating-enforcement and result-submission settings before registration opens. Tournament-level profile requirements and division-level rating limits may be separate settings.
Use the bracket math guide to size your draw, then follow the Fluid tournament walkthrough.