VIPR Rating Audit Trail

Diana Sellers

Member ID: TVCPC-P0596   Generated: 2026-10-29 07:46 PM

3.9880 -> 3.9291
Net -0.0589   Record 6-10   Win Rate 38%   Games 16
Initial VIPR
3.9880
Registry seed
Current VIPR
3.9291
After latest rated game
Net Movement
-0.0589
Current minus initial
Record
6-10
38% win rate · 16 rated games

Storyline

Diana Sellers entered VIPR with an initial registry rating of 3.9880. Across 16 rated doubles games, the player went 6-10 and moved -0.0589, finishing at 3.9291.

Why It Moved

AI-generated explanation: The 6-10 record produced +0.0374 from wins and -0.0963 from losses, for a net move of -0.0589. The biggest single-game impact was -0.0153 against Beth Walker as partner and Sue Reich / Kim Christopherson as opponents. In game #11 on 2026-10-22, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.9944 vs opponent team 3.7877.

Partner Chemistry

Partnership patterns are starting to emerge.

Diana's most common partner signals so far: Kim Christopherson (2-2, 50%), Sue Reich (1-1, 50%), Brenda Bochtler (1-0, 100%), Kelly Armagost (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

Diana has faced Kim Christopherson 6 times - record: 2-4. A close matchup worth watching.

Session Summary

DateW-LStartEndNet
2026-10-01 2-2 3.9880 3.9756 -0.0124
2026-10-15 1-3 3.9756 3.9566 -0.0190
2026-10-22 2-2 3.9566 3.9568 +0.0002
2026-10-29 1-3 3.9568 3.9291 -0.0277

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-10-01
Thursday Ladies Ladder League - Fall 2026
Win 11-10 Kim Christopherson Tina Stephens / Carolyn Roan 3.9880 +0.0045 3.9925
2 2026-10-01
Thursday Ladies Ladder League - Fall 2026
Loss 8-11 Jolynne Colvin Kim Christopherson / Tina Stephens 3.9925 -0.0100 3.9825
3 2026-10-01
Thursday Ladies Ladder League - Fall 2026
Win 11-3 Tina Stephens Carolyn Roan / Jolynne Colvin 3.9825 +0.0038 3.9863
4 2026-10-01
Thursday Ladies Ladder League - Fall 2026
Loss 9-11 Carolyn Roan Kim Christopherson / Jolynne Colvin 3.9863 -0.0107 3.9756
5 2026-10-15
Thursday Ladies Ladder League - Fall 2026
Loss 2-11 Kathy Gelb Letti Johnson / Brenda Bochtler 3.9756 -0.0039 3.9717
6 2026-10-15
Thursday Ladies Ladder League - Fall 2026
Win 11-6 Brenda Bochtler Kathy Gelb / Janet Artrip 3.9717 +0.0025 3.9742
7 2026-10-15
Thursday Ladies Ladder League - Fall 2026
Loss 8-11 Janet Artrip Letti Johnson / Kathy Gelb 3.9742 -0.0037 3.9705
8 2026-10-15
Thursday Ladies Ladder League - Fall 2026
Loss 10-11 Letti Johnson Brenda Bochtler / Janet Artrip 3.9705 -0.0139 3.9566
9 2026-10-22
Thursday Ladies Ladder League - Fall 2026
Loss 5-11 Kim Christopherson Beth Walker / Sue Reich 3.9566 -0.0069 3.9497
10 2026-10-22
Thursday Ladies Ladder League - Fall 2026
Win 11-2 Sue Reich Beth Walker / Kim Christopherson 3.9497 +0.0088 3.9585
11 2026-10-22
Thursday Ladies Ladder League - Fall 2026
Loss 10-11 Beth Walker Sue Reich / Kim Christopherson 3.9585 -0.0153 3.9432
12 2026-10-22
Thursday Ladies Ladder League - Fall 2026
Win 11-4 Kim Christopherson Beth Walker / Sue Reich 3.9432 +0.0136 3.9568
13 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 8-11 Sue Reich Kelly Armagost / Kim Christopherson 3.9568 -0.0126 3.9442
14 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 8-11 Eveline Norman Sue Reich / Kelly Armagost 3.9442 -0.0059 3.9383
15 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Win 11-3 Kelly Armagost Kim Christopherson / Eveline Norman 3.9383 +0.0042 3.9425
16 2026-10-29
Thursday Ladies Ladder League - Fall 2026
Loss 9-11 Kim Christopherson Sue Reich / Eveline Norman 3.9425 -0.0134 3.9291

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 3.8151 3.5995 +0.2156 +0.0045
2 3.7280 3.7274 -0.0006 -0.0100
3 3.8082 3.5558 +0.2524 +0.0038
4 3.6676 3.6446 -0.0230 -0.0107
5 3.9682 4.2144 +0.2462 -0.0039
6 4.0957 3.7594 +0.3362 +0.0025
7 3.7592 4.0165 +0.2572 -0.0037
8 4.0235 3.8816 -0.1419 -0.0139
9 3.8205 3.9318 +0.1113 -0.0069
10 3.8975 3.8548 +0.0428 +0.0088
11 3.9944 3.7877 -0.2066 -0.0153
12 3.8162 3.9484 -0.1321 +0.0136
13 3.9070 3.8134 -0.0936 -0.0126
14 3.7371 3.8887 +0.1516 -0.0059
15 3.9206 3.6884 +0.2322 +0.0042
16 3.8368 3.7127 -0.1241 -0.0134

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 +0.2156 -> computed delta +0.0045; 3.9880 +0.0045 = 3.9925