VIPR Rating Audit Trail

Joyce Leach

Member ID: TVCPC-P0645   Generated: 2026-10-29 07:46 PM

2.3220 -> 2.2949
Net -0.0271   Record 1-3   Win Rate 25%   Games 4
Initial VIPR
2.3220
Registry seed
Current VIPR
2.2949
After latest rated game
Net Movement
-0.0271
Current minus initial
Record
1-3
25% win rate · 4 rated games

Storyline

Joyce Leach entered VIPR with an initial registry rating of 2.3220. Across 4 rated doubles games, the player went 1-3 and moved -0.0271, finishing at 2.2949.

Why It Moved

AI-generated explanation: The 1-3 record produced +0.0044 from wins and -0.0315 from losses, for a net move of -0.0271. The biggest single-game impact was -0.0156 against Deborah Austin as partner and Helen Burns / Nancy Wart as opponents. In game #4 on 2026-10-22, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 2.3970 vs opponent team 2.1748.

Partner Chemistry

Partnership patterns are starting to emerge.

Joyce's most common partner signals so far: Deborah Austin (1-1, 50%), Helen Burns (0-1, 0%), Nancy Wart (0-1, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.

Streaks & Rivalries
Rivalry

Joyce has faced Helen Burns 3 times - record: 1-2. A close matchup worth watching.

Session Summary

DateW-LStartEndNet
2026-10-22 1-3 2.3220 2.2949 -0.0271

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-10-22
Thursday Ladies Ladder League - Fall 2026
Win 11-10 Deborah Austin Helen Burns / Nancy Wart 2.3220 +0.0044 2.3264
2 2026-10-22
Thursday Ladies Ladder League - Fall 2026
Loss 10-11 Helen Burns Deborah Austin / Nancy Wart 2.3264 -0.0068 2.3196
3 2026-10-22
Thursday Ladies Ladder League - Fall 2026
Loss 3-11 Nancy Wart Deborah Austin / Helen Burns 2.3196 -0.0091 2.3105
4 2026-10-22
Thursday Ladies Ladder League - Fall 2026
Loss 5-11 Deborah Austin Helen Burns / Nancy Wart 2.3105 -0.0156 2.2949

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 2.3990 2.1783 +0.2207 +0.0044
2 2.2078 2.3242 +0.1164 -0.0068
3 2.2500 2.2821 +0.0321 -0.0091
4 2.3970 2.1748 -0.2222 -0.0156

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 +0.2207 -> computed delta +0.0044; 2.3220 +0.0044 = 2.3264