As discussed in our guide about DUPR Ratings, your DUPR is a measure of your skill in pickleball from 2.0 to 8.0. However, these aren't the only ratings that matter. To ensure that your DUPR rating is as close to your true skill as possible, a Reliability Score is assigned.
In this guide, we will discuss what you need to know about Reliability score. We will cover what factors can affect it and why it could be the reason your score is stuck.
What is Considered a Good Reliability Score?
Reliability Score is measured from 1 to 100%. In essence, it tells you how confident the algorithm is in your score.
For example, a 4.0 with 40% reliability and a 4.0 with 90% reliability have the same rating but very different standing. The algorithm treats the latter as more accurate and stable than the former. In other words, reliability is how closely your DUPR rating reflects your actual skill.
When measuring reliability, you have to think about the 60% rule:
Reliability level | What it means for your rating |
|---|---|
Below 60% | The rating moves slowly or can be volatile, jumping from one extreme to the other. The system is still trying to figure out your true skill level as a player. |
60% and above | The rating responds properly, and is raised by more matches, recent play, and varied opponents. DUPR considers your rating "reliable". |
Factors that Affect Reliability
There are three ways to improve your reliability:
- Number of matches: More logged results give the algorithm more data. Most players cross into reliable territory somewhere around 10 to 20 matches.
- Recency: Recent matches count for more. A rating built on games from last year is less trusted than one built on games from last month.
- Variety of opponents: Playing a range of different, already-rated opponents builds reliability faster than playing the same two friends over and over.
If you want your rating to settle quickly, you must play a good number of recent matches against varied, rated opponents. That is also the fastest path to a rating you can trust, which we cover in how to improve your DUPR.
Reliability Does Decay
Over time, reliability can drift down if you stop playing. DUPR has time-decay algorithms (often measured via a metric called half-life) that give weight to recent matches more than older ones. Without new match entries, your data grows outdated.
As time passes without new input, the statistical certainty of your rating declines. For instance, a fully reliable score can degrade to ~60% after roughly six months of inactivity, and can drop even faster after that.
Although to some players it may sound unfair, there's a good reason why DUPR Reliability score has this feature. If your reliability scores never decayed, inactive players could hold onto inflated (or understated) ratings indefinitely. Decay ensures tournament directors and club organizers can distinguish between an active player with a trustworthy 4.0 rating and an inactive player whose 4.0 rating is based on games played two years ago.
Singles and Doubles Have Their Own Reliability Score |
Does Reliability Have Anything to Do with Why My DUPR is Stuck?
When your DUPR rating feels "stuck," the culprit is almost always how high (or low) your Reliability Score is relative to the types of matches you are logging. There are almost always two scenarios why this is the case:
Scenario A: High Reliability = High Inertia (The Anchor Effect)
If your Reliability Score is close to 100%, DUPR is highly confident that your rating is accurate based on a large volume of historical data. When reliability is high, the system assumes minor point swings or unexpected wins are anomalies. New matches barely move the needle (you might see micro-adjustments like +0.002 or -0.001).
The fix is to break through a high-reliability plateau. You need statistically significant disruption such as:
- Defeating players who are rated substantially higher than you
- Winning consistently against higher-rated opponents in official, verified events.
Scenario B: Low Reliability = Limited Connectivity
This is likely the most common scenario that many players encounter with their Reliability Score. If your Reliability Score is low (e.g., under 60%), your rating might appear frozen or fail to move despite winning games.
Thanks to the update in July 2025, DUPR has implemented a performance vs expectation algorithm that also evaluates your opponent's ratings. Your connectivity to these opponents is crucial to the health of your reliability score. If you are logging games against unrated players, players with low reliability, or within a closed group ("echo chamber"), DUPR cannot validate the results mathematically.
The moment one of them plays a rated opponent, the whole group anchors to it. This is why a thin or isolated local scene produces lower reliability and a slower stabilisation point that matters for newer markets and one we get into in our guide on getting rated in Malaysia.
To solve this issue, you must play against varied opponents who already have high DUPR reliability scores, such as:
- In sanctioned club leagues
- Verified tournaments
- Open play with established players
How Reliability Affects Your Rating
Low reliability actively dampens how much each result moves your rating. When the system is unsure of your level, it makes small, conservative adjustments so a couple of flukey games do not send your rating flying. That protects you from statistical noise, but it also means a genuinely strong stretch of play takes longer to show up. If you are asking why your rating is stuck, the honest first answer is usually reliability, not the algorithm misjudging your games. The mechanics of how results are scored are in how the DUPR algorithm works.
Chasing a higher rating before your reliability is solid is like tuning an engine that is not warmed up. Get past 60% first with a run of recent, varied matches. Then the results you earn actually count.
Common questions
What is a good DUPR reliability score?
60 percent or higher is considered reliable, and 100 percent means full confidence. Below 60 percent your rating is still settling and moves cautiously.
Why is my DUPR reliability low?
Usually too few matches, matches that are not recent, or playing the same small group of opponents. Log more recent games against a variety of rated players to raise it.
Does my DUPR rating drop if I stop playing?
Your rating number does not automatically fall, but your reliability decays, drifting toward 60 percent over about six months of inactivity, which makes the rating slower to respond when you return.
How many matches until my rating is reliable?
Most players reach a reliable rating after 10 to 20 logged matches against varied opponents, though a thin local pool can slow that down. See what counts as a good rating for where you might land.