PPI is our proprietary performance telemetry engine — not another legacy baseline calculator. Where older models settle for rigid pre-match predictive math, PPI grades real-time point-differential efficiency, tactical resilience and deep execution telemetry. Read it however you like: full technical breakdown, or plain English.
Disclosure policy
Mechanics are published. Coefficients, decay constants and exploit thresholds are proprietary and intentionally withheld.
Legacy baseline calculators stop at a rigid pre-match prediction. Our proprietary advanced algorithmic architecture treats expectation as a starting reference only: the PPI gap between sides sets a probability baseline, and every subsequent measurement is graded against live execution rather than the raw win/loss flag.
Inputs: side-averaged PPI, format, partner covariance, recency decay — reference layer only.
Every point is telemetry. Our engine grades how efficiently you converted rallies into scoreboard separation, folding differential in as a diminishing-returns term so 11–3 carries more information than 11–9 without letting blowout farming distort the standard.
Concave efficiency curve, bounded to neutralize score-padding exploits.
Every competitor carries a proprietary confidence band. New and erratic players run high volatility so the framework locates them fast; established, high-volume records run tight so a single upset cannot erase a season of verified evidence.
Volatility scales with match count, result variance, inactivity drift and calibration state.
Movement is deliberately asymmetric. A tight loss to a materially stronger opponent is high-value evidence of tactical resilience and can net positive movement — something no rigid legacy model will ever reward. The bonus scales with both the PPI gap and margin integrity.
Gap-gated, margin-gated, capped per rolling window to prevent farming.
Grinding out a narrow win over a materially weaker opponent is a negative execution signal, and our framework scores it as one. Because heavy favorites are penalized for sloppy closeouts, suppressing your rating to raid lower flights is structurally unprofitable.
Penalty magnitude keyed to expectation surplus × inverse margin.
Results require two-way peer verification and pass geo-plausibility checks from court check-in. Collusion patterns, ghost opponents and repeated identical scorelines are flagged and held out of the rating until reviewed — the standard stays clean.
Held matches never silently alter a rating; they resolve or void.
Worked expectations
| You | Opponent | Result | Δ PPI |
|---|---|---|---|
| PPI 3.30 | PPI 4.24 | Lost 9–11 | +0.03 |
| PPI 3.30 | PPI 4.24 | Won 11–8 | +0.09 |
| PPI 3.30 | PPI 2.35 | Won 11–9 | −0.02 |
| PPI 3.30 | PPI 2.35 | Won 11–2 | +0.01 |
| PPI 3.30 | PPI 2.35 | Lost 8–11 | −0.07 |
Illustrative values. Actual movement depends on volatility state, verification status and rolling-window caps.
The PPI is expressed on a 2.0 – 8.0 ladder. Here is exactly where each number lands you on the competitive ladder, and what each match result is worth.
Scoring table
| PPI range | Level | Flight placement | What it means | Competes in |
|---|---|---|---|---|
| 2.00 – 2.50 | Beginner (Upgradable) | Flight F — Social | Recreational open play and skills nights. | Open play, skills nights, unranked scrimmages |
| 2.50 – 3.00 | Novice | Flight E — Novice | First sanctioned ladder rungs. | Local ladder events and novice brackets |
| 3.00 – 3.37 | Developing | Flight D — Developing | Consistent serve, return and reset play. | Local sanctioned brackets, doubles ladders |
| 3.38 – 3.85 | Competitive | Flight C — Competitive | Third-shot drops and kitchen control. | Regional qualifiers and competitive draws |
| 3.85 – 4.40 | Advanced | Flight B — Advanced | Regional ladder and qualifier events. | Regional main draws and PADL tour qualifiers |
| 4.40 – 5.00 | Elite | Flight A — Elite | State-level sanctioned brackets. | State-level sanctioned brackets and tour events |
| 5.00 – 8.00 | Tour Level Pro | Pro Flight | Tour Level sanctioned pro draws. | Sanctioned pro draws, PADL Tour prize events |
Every member starts hidden in calibration and is placed automatically once the rating locks. Placement is recalculated after each verified match — you never apply for a flight.
Movement table
| Scenario | Example | Δ underdog | Δ favorite |
|---|---|---|---|
| Close loss to a much stronger player | PPI 2.50 loses 9–11 to PPI 5.00 | +0.06 | −0.02 |
| Upset win over a much stronger player | PPI 2.50 wins 11–9 over PPI 5.00 | +0.14 | −0.04 |
| Dominant upset | PPI 2.50 wins 11–4 over PPI 5.00 | +0.19 | −0.06 |
| Expected blowout loss | PPI 2.50 loses 2–11 to PPI 5.00 | +0.01 | +0.01 |
| Favorite squeaks by (anti-sandbagging) | PPI 5.00 wins 11–9 over PPI 2.50 | −0.02 | +0.06 |
| Even match, either way | PPI 4.00 vs PPI 4.00, decided by margin | ±0.01 – 0.04 | mirror |
Illustrative movement for a 2.50 underdog against a 5.00 favorite. A winning favorite is never penalized for a blowout he can't avoid, but grinding out a narrow win — or losing outright — costs him. Actual movement scales with volatility state, match volume and rolling-window caps.
DUPR, ELO and Glicko are rigid pre-match predictive math models inherited from chess and static 1v1 video games. PPI is a proprietary dynamic rating framework built for court sport reality: real-time point-differential efficiency, tactical resilience and deep execution telemetry on every rally.
| Legacy Baseline CalculatorsDUPR / ELO / Glicko | PADL USA Proprietary StandardPPI Telemetry Engine |
|---|---|
| The "Punished for Gritting" Flaw Losing a nail-biter to an elite player drops your rating, because a rigid model only reads the win/loss flag. | Tactical Resilience: The Hero Bonus Our proprietary framework scores execution under pressure, so overperforming against superior players lifts your PPI even in a loss. |
| The Sandbagging Loophole Advanced players farm wins off beginners with zero penalty for sloppy execution. | Anti-Sandbagging Enforcement Execution telemetry penalizes favorites who close out narrowly, making suppressed ratings structurally unprofitable. |
| Binary Blindness Pre-match predictive math plus a win/loss result — the rally-by-rally reality is discarded. | Real-Time Point-Differential Efficiency Every point is graded telemetry, rewarding true scoreboard efficiency over hollow victories. |
| Stagnant Volatility Rigid update formulas take months to correct an inaccurate baseline or recognize improvement. | Proprietary Dynamic Volatility Control Rapid calibration windows for new competitors, with tight, stable long-term tracking at the elite tier. |
PADL USA owns the proprietary standard for performance recognition — built for serious competitors who want every point, every closeout and every gritty stand measured.
Get Your Verified PPI ScoreAdjust ratings and close-out scores to see how legacy baseline calculators punish grit, and how our proprietary performance telemetry engine reads the same match.
Strict penalty applied. Close margins against higher seeds are ignored.
Zero-sum binary outcome. Treats a close 11-9 loss the same as a crushing 11-1 blowout.
Real-time point-differential efficiency cushions your standing through genuinely hard battles.
Calibration takes three to five verified matches. Nothing is public until it's locked.
Start calibration