VIPR Rating Audit Trail

Nancy Grzesiek

Member ID: TVCPC-P0397   Generated: 2026-07-23 05:16 PM

3.5100 -> 3.5068
Net -0.0032   Record 1-1   Win Rate 50%   Games 2
Initial VIPR
3.5100
Registry seed
Current VIPR
3.5068
After latest rated game
Net Movement
-0.0032
Current minus initial
Record
1-1
50% win rate · 2 rated games

Storyline

Nancy Grzesiek entered VIPR with an initial registry rating of 3.5100. Across 2 rated doubles games, the player went 1-1 and moved -0.0032, finishing at 3.5068.

Why It Moved

AI-generated explanation: The 1-1 record produced +0.0084 from wins and -0.0116 from losses, for a net move of -0.0032. 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%). 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 1-game winning streak in rated VIPR games.

Session Summary

DateW-LStartEndNet
2026-07-02 1-1 3.5100 3.5068 -0.0032

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-07-02 Loss 9-11 Ann Moreland Lisa Dreier / Jennifer Hill 3.5100 -0.0116 3.4984
2 2026-07-02 Win 11-2 Jennifer Hill Lisa Dreier / Jean Narod 3.4984 +0.0084 3.5068

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

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