VIPR Rating Audit Trail

Jennifer A Hamm

Member ID: TVCPC-P0257   Generated: 2026-10-29 07:46 PM

3.0010 -> 2.9486
Net -0.0524   Record 5-9   Win Rate 36%   Games 14
Initial VIPR
3.0010
Registry seed
Current VIPR
2.9486
After latest rated game
Net Movement
-0.0524
Current minus initial
Record
5-9
36% win rate · 14 rated games

Storyline

Jennifer A Hamm entered VIPR with an initial registry rating of 3.0010. Across 14 rated doubles games, the player went 5-9 and moved -0.0524, finishing at 2.9486.

Why It Moved

AI-generated explanation: The 5-9 record produced +0.0392 from wins and -0.0916 from losses, for a net move of -0.0524. The biggest single-game impact was -0.0136 against Mary LaFrancois as partner and Renae Kray / Joy McCormick as opponents. In game #11 on 2026-09-17, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 2.9436 vs opponent team 2.8117.

Partner Chemistry

Partnership patterns are starting to emerge.

Jennifer's most common partner signals so far: Elena Gordon (1-2, 33%), Barbara Amato (1-0, 100%), Brenda Leardi (1-0, 100%), Renae Kray (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

Jennifer has faced Renae Kray 4 times - record: 0-4. A tough matchup so far.

Session Summary

DateW-LStartEndNet
2026-07-16 0-2 3.0010 2.9823 -0.0187
2026-07-23 3-1 2.9823 2.9967 +0.0144
2026-08-06 1-3 2.9967 2.9761 -0.0206
2026-09-17 1-3 2.9761 2.9486 -0.0275

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-07-16
Thursday Ladies Ladder League - SUMMER 2026
Loss 7-11 Tricia Gallagher Renae Kray / Karen Scott 3.0010 -0.0098 2.9912
2 2026-07-16
Thursday Ladies Ladder League - SUMMER 2026
Loss 6-11 Julee Johanson Renae Kray / Tricia Gallagher 2.9912 -0.0089 2.9823
3 2026-07-23
Thursday Ladies Ladder League - SUMMER 2026
Win 11-6 Elena Gordon Rosa Kopja / Beth Arms 2.9823 +0.0079 2.9902
4 2026-07-23
Thursday Ladies Ladder League - SUMMER 2026
Loss 5-11 Beth Arms Rosa Kopja / Barbara Amato 2.9902 -0.0126 2.9776
5 2026-07-23
Thursday Ladies Ladder League - SUMMER 2026
Win 11-5 Rosa Kopja Elena Gordon / Barbara Amato 2.9776 +0.0068 2.9844
6 2026-07-23
Thursday Ladies Ladder League - SUMMER 2026
Win 11-7 Barbara Amato Elena Gordon / Beth Arms 2.9844 +0.0123 2.9967
7 2026-08-06
Thursday Ladies Ladder League - SUMMER 2026
Loss 5-11 Elena Gordon Brenda Leardi / Nancy Krau 2.9967 -0.0107 2.9860
8 2026-08-06
Thursday Ladies Ladder League - SUMMER 2026
Win 11-2 Brenda Leardi Elena Gordon / Nancy Krau 2.9860 +0.0061 2.9921
9 2026-08-06
Thursday Ladies Ladder League - SUMMER 2026
Loss 1-11 Nancy Krau Elena Gordon / Brenda Leardi 2.9921 -0.0058 2.9863
10 2026-08-06
Thursday Ladies Ladder League - SUMMER 2026
Loss 4-11 Elena Gordon Brenda Leardi / Nancy Krau 2.9863 -0.0102 2.9761
11 2026-09-17
Thursday Ladies Ladder League - Summer 2026
Loss 7-11 Mary LaFrancois Renae Kray / Joy McCormick 2.9761 -0.0136 2.9625
12 2026-09-17
Thursday Ladies Ladder League - Summer 2026
Loss 9-11 Debbie Chaffee Joy McCormick / Mary LaFrancois 2.9625 -0.0117 2.9508
13 2026-09-17
Thursday Ladies Ladder League - Summer 2026
Loss 10-11 Joy McCormick Renae Kray / Debbie Chaffee 2.9508 -0.0083 2.9425
14 2026-09-17
Thursday Ladies Ladder League - Summer 2026
Win 11-7 Renae Kray Mary LaFrancois / Debbie Chaffee 2.9425 +0.0061 2.9486

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 3.0214 3.0293 +0.0079 -0.0098
2 3.0050 3.0416 +0.0366 -0.0089
3 2.9929 2.9199 +0.0730 +0.0079
4 2.9206 2.8299 -0.0908 -0.0126
5 2.9751 2.8579 +0.1172 +0.0068
6 2.8372 2.9183 -0.0811 +0.0123
7 3.0012 2.9777 -0.0235 -0.0107
8 3.0603 2.9186 +0.1417 +0.0061
9 2.9117 3.0683 +0.1566 -0.0058
10 2.9906 2.9836 -0.0070 -0.0102
11 2.9436 2.8117 -0.1318 -0.0136
12 2.8471 2.7862 -0.0609 -0.0117
13 2.8049 2.8640 +0.0592 -0.0083
14 2.9761 2.8342 +0.1419 +0.0061

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 +0.0079 -> computed delta -0.0098; 3.0010 -0.0098 = 2.9912