VIPR Rating Audit Trail

Sally Naumann

Member ID: TVCPC-P0385   Generated: 2026-10-29 07:46 PM

3.2700 -> 3.2518
Net -0.0182   Record 5-7   Win Rate 42%   Games 12
Initial VIPR
3.2700
Registry seed
Current VIPR
3.2518
After latest rated game
Net Movement
-0.0182
Current minus initial
Record
5-7
42% win rate · 12 rated games

Storyline

Sally Naumann entered VIPR with an initial registry rating of 3.2700. Across 12 rated doubles games, the player went 5-7 and moved -0.0182, finishing at 3.2518.

Why It Moved

AI-generated explanation: The 5-7 record produced +0.0509 from wins and -0.0691 from losses, for a net move of -0.0182. The biggest single-game impact was -0.0141 against Kathy Battle as partner and Debbie Fischer / Rose Hoffmann as opponents. In game #4 on 2026-07-02, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.2731 vs opponent team 3.1203.

Partner Chemistry

Partnership patterns are starting to emerge.

Sally's most common partner signals so far: Brenda Leardi (1-1, 50%), Judy Arlington (1-0, 100%), Kelly Evers (1-0, 100%), Marcie Stern (1-0, 100%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.

Streaks & Rivalries
Rivalry

Sally has faced Judy Arlington 3 times - record: 2-1. A close matchup worth watching.

Session Summary

DateW-LStartEndNet
2026-07-02 1-3 3.2700 3.2457 -0.0243
2026-07-23 3-1 3.2457 3.2678 +0.0221
2026-10-29 1-3 3.2678 3.2518 -0.0160

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-07-02
Thursday Ladies Ladder League - SUMMER 2026
Loss 5-11 Debbie Fischer Kathy Battle / Deborah Ahart 3.2700 -0.0083 3.2617
2 2026-07-02
Thursday Ladies Ladder League - SUMMER 2026
Win 11-6 Rose Hoffmann Deborah Ahart / Debbie Fischer 3.2617 +0.0090 3.2707
3 2026-07-02
Thursday Ladies Ladder League - SUMMER 2026
Loss 6-11 Deborah Ahart Kathy Battle / Rose Hoffmann 3.2707 -0.0109 3.2598
4 2026-07-02
Thursday Ladies Ladder League - SUMMER 2026
Loss 8-11 Kathy Battle Debbie Fischer / Rose Hoffmann 3.2598 -0.0141 3.2457
5 2026-07-23
Thursday Ladies Ladder League - SUMMER 2026
Win 11-1 Judy Arlington Brenda Leardi / Marcie Stern 3.2457 +0.0096 3.2553
6 2026-07-23
Thursday Ladies Ladder League - SUMMER 2026
Win 11-6 Marcie Stern Judy Arlington / Brenda Leardi 3.2553 +0.0100 3.2653
7 2026-07-23
Thursday Ladies Ladder League - SUMMER 2026
Loss 8-11 Brenda Leardi Judy Arlington / Marcie Stern 3.2653 -0.0090 3.2563
8 2026-07-23
Thursday Ladies Ladder League - SUMMER 2026
Win 11-5 Brenda Leardi Judy Arlington / Marcie Stern 3.2563 +0.0115 3.2678
9 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 0-11 Stephanie Chen Sheryl Couch / Kelly Evers 3.2678 -0.0100 3.2578
10 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Win 11-9 Kelly Evers Sheryl Couch / Lori Pasbrig 3.2578 +0.0108 3.2686
11 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 5-11 Sheryl Couch Stephanie Chen / Lori Pasbrig 3.2686 -0.0093 3.2593
12 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 8-11 Lori Pasbrig Stephanie Chen / Kelly Evers 3.2593 -0.0075 3.2518

Formula Homework

These rows show the team ratings used in the adjustment calculation. The computed delta is the signed rating change produced by the current v0.6 formula.

#Player Team ( AVG )Opponent Team ( AVG )Winner-Loser VIPR DiffComputed Delta
1 3.1657 3.2269 +0.0612 -0.0083
2 3.1758 3.1420 +0.0338 +0.0090
3 3.2221 3.1916 -0.0305 -0.0109
4 3.2731 3.1203 -0.1529 -0.0141
5 3.2595 3.2456 +0.0139 +0.0096
6 3.2508 3.2516 -0.0008 +0.0100
7 3.2339 3.2686 +0.0347 -0.0090
8 3.2249 3.2776 -0.0527 +0.0115
9 3.3142 3.3157 +0.0014 -0.0100
10 3.2748 3.3025 -0.0277 +0.0108
11 3.2904 3.3131 +0.0228 -0.0093
12 3.2630 3.3510 +0.0879 -0.0075

Rating movement formula

Team VIPR = average - (average - lower partner) * CRF, with CRF = 0.40.

Adjustment = 0.02 / (1 + 10 ^ (2.5 * (winner team VIPR - loser team VIPR))).

Winning partners both receive +adjustment. Losing partners both receive -adjustment.

Score margin is recorded for context but is not currently part of the v0.6 formula.

First game check: winner-loser VIPR diff +0.0612 -> computed delta -0.0083; 3.2700 -0.0083 = 3.2617