VIPR Rating Audit Trail

Nancy Grzesiek

Member ID: TVCPC-P0397   Generated: 2026-10-29 07:46 PM

3.5100 -> 3.4315
Net -0.0785   Record 1-9   Win Rate 10%   Games 10
Initial VIPR
3.5100
Registry seed
Current VIPR
3.4315
After latest rated game
Net Movement
-0.0785
Current minus initial
Record
1-9
10% win rate · 10 rated games

Storyline

Nancy Grzesiek entered VIPR with an initial registry rating of 3.5100. Across 10 rated doubles games, the player went 1-9 and moved -0.0785, finishing at 3.4315.

Why It Moved

AI-generated explanation: The 1-9 record produced +0.0084 from wins and -0.0869 from losses, for a net move of -0.0785. The biggest single-game impact was -0.0116 against Ann Moreland as partner and Lisa Dreier / Jennifer Hill as opponents. In game #1 on 2026-07-02, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.5124 vs opponent team 3.4555.

Partner Chemistry

Partnership patterns are starting to emerge.

Nancy's most common partner signals so far: Jennifer Hill (1-0, 100%), Ann Moreland (0-1, 0%), Cindy Hilderbrand (0-1, 0%), Janice Czerwinski (0-1, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.

Streaks & Rivalries
Streak

Nancy is currently on a 8-game losing streak in rated VIPR games.

Session Summary

DateW-LStartEndNet
2026-07-02 1-1 3.5100 3.5068 -0.0032
2026-08-06 0-4 3.5068 3.4720 -0.0348
2026-10-29 0-4 3.4720 3.4315 -0.0405

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-07-02
Thursday Ladies Ladder League - SUMMER 2026
Loss 9-11 Ann Moreland Lisa Dreier / Jennifer Hill 3.5100 -0.0116 3.4984
2 2026-07-02
Thursday Ladies Ladder League - SUMMER 2026
Win 11-2 Jennifer Hill Lisa Dreier / Jean Narod 3.4984 +0.0084 3.5068
3 2026-08-06
Thursday Ladies Ladder League - SUMMER 2026
Loss 1-11 Sally Musser Stacey Cellini / Michele Blanchard 3.5068 -0.0069 3.4999
4 2026-08-06
Thursday Ladies Ladder League - SUMMER 2026
Loss 5-11 Michele Blanchard Sally Musser / Jeanan Delp 3.4999 -0.0108 3.4891
5 2026-08-06
Thursday Ladies Ladder League - SUMMER 2026
Loss 9-11 Jeanan Delp Stacey Cellini / Sally Musser 3.4891 -0.0070 3.4821
6 2026-08-06
Thursday Ladies Ladder League - SUMMER 2026
Loss 2-11 Stacey Cellini Michele Blanchard / Jeanan Delp 3.4821 -0.0101 3.4720
7 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 6-11 Suzie Dunn Janice Czerwinski / Melissa Terhark 3.4720 -0.0089 3.4631
8 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 10-11 Melissa Terhark Suzie Dunn / Cindy Hilderbrand 3.4631 -0.0116 3.4515
9 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 2-11 Cindy Hilderbrand Janice Czerwinski / Suzie Dunn 3.4515 -0.0089 3.4426
10 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 5-11 Janice Czerwinski Melissa Terhark / Cindy Hilderbrand 3.4426 -0.0111 3.4315

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 3.5124 3.4555 -0.0569 -0.0116
2 3.4789 3.4225 +0.0565 +0.0084
3 3.5290 3.6402 +0.1112 -0.0069
4 3.5423 3.5130 -0.0292 -0.0108
5 3.4952 3.6029 +0.1078 -0.0070
6 3.5413 3.5373 -0.0041 -0.0101
7 3.4587 3.4966 +0.0379 -0.0089
8 3.4729 3.4167 -0.0562 -0.0116
9 3.4343 3.4732 +0.0389 -0.0089
10 3.4740 3.4348 -0.0391 -0.0111

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 -0.0569 -> computed delta -0.0116; 3.5100 -0.0116 = 3.4984