VIPR Rating Audit Trail

Wendy Bachman

Member ID: TVCPC-P0333   Generated: 2026-09-04 12:10 PM

2.5890 -> 2.5624
Net -0.0266   Record 7-9   Win Rate 44%   Games 16
Initial VIPR
2.5890
Registry seed
Current VIPR
2.5624
After latest rated game
Net Movement
-0.0266
Current minus initial
Record
7-9
44% win rate · 16 rated games

Storyline

Wendy Bachman entered VIPR with an initial registry rating of 2.5890. Across 16 rated doubles games, the player went 7-9 and moved -0.0266, finishing at 2.5624.

Why It Moved

AI-generated explanation: The 7-9 record produced +0.0518 from wins and -0.0784 from losses, for a net move of -0.0266. The biggest single-game impact was -0.0179 against Pilar Winters as partner and Amy Fortier / Marjorie Fassnacht as opponents. In game #14 on 2026-09-03, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 2.5658 vs opponent team 2.1949.

Partner Chemistry

Partnership patterns are starting to emerge.

Wendy's most common partner signals so far: Amy Fortier (0-2, 0%), Pilar Winters (0-2, 0%), Cynthia Speiran (1-0, 100%), Fern S Reisinger (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

Wendy has faced Amy Fortier 4 times - record: 2-2. A close matchup worth watching.

Session Summary

DateW-LStartEndNet
2026-08-06 1-3 2.5890 2.5827 -0.0063
2026-08-20 2-2 2.5827 2.5805 -0.0022
2026-08-27 2-2 2.5805 2.5707 -0.0098
2026-09-03 2-2 2.5707 2.5624 -0.0083

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-08-06 Loss 9-11 Debbie Chaffee Kim Johnson / Pilar Winters 2.5890 -0.0090 2.5800
2 2026-08-06 Loss 3-11 Beth Arms Kim Johnson / Debbie Chaffee 2.5800 -0.0047 2.5753
3 2026-08-06 Loss 6-11 Pilar Winters Beth Arms / Debbie Chaffee 2.5753 -0.0035 2.5718
4 2026-08-06 Win 11-3 Kim Johnson Beth Arms / Pilar Winters 2.5718 +0.0109 2.5827
5 2026-08-20 Loss 10-11 Deborah Austin Jackie Huckins / Missi Horton 2.5827 -0.0145 2.5682
6 2026-08-20 Loss 6-11 Lauren Esterlein Deborah Austin / Jackie Huckins 2.5682 -0.0061 2.5621
7 2026-08-20 Win 11-10 Jackie Huckins Missi Horton / Lauren Esterlein 2.5621 +0.0061 2.5682
8 2026-08-20 Win 11-5 Missi Horton Deborah Austin / Lauren Esterlein 2.5682 +0.0123 2.5805
9 2026-08-27 Win 11-6 Cynthia Speiran Fern S Reisinger / Amy Fortier 2.5805 +0.0034 2.5839
10 2026-08-27 Loss 3-11 Coni Lentz Amy Fortier / Cynthia Speiran 2.5839 -0.0172 2.5667
11 2026-08-27 Loss 8-11 Amy Fortier Fern S Reisinger / Coni Lentz 2.5667 -0.0029 2.5638
12 2026-08-27 Win 11-8 Fern S Reisinger Cynthia Speiran / Coni Lentz 2.5638 +0.0069 2.5707
13 2026-09-03 Loss 10-11 Amy Fortier Kim Held / Pilar Winters 2.5707 -0.0026 2.5681
14 2026-09-03 Loss 10-11 Pilar Winters Amy Fortier / Marjorie Fassnacht 2.5681 -0.0179 2.5502
15 2026-09-03 Win 11-2 Marjorie Fassnacht Kim Held / Amy Fortier 2.5502 +0.0032 2.5534
16 2026-09-03 Win 11-5 Kim Held Pilar Winters / Marjorie Fassnacht 2.5534 +0.0090 2.5624

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 2.6719 2.7066 +0.0347 -0.0090
2 2.6659 2.8687 +0.2028 -0.0047
3 2.5940 2.8613 +0.2672 -0.0035
4 2.6709 2.7035 -0.0325 +0.0109
5 2.6343 2.4649 -0.1694 -0.0145
6 2.4986 2.6404 +0.1418 -0.0061
7 2.5760 2.4332 +0.1428 +0.0061
8 2.4606 2.5402 -0.0796 +0.0123
9 2.5325 2.2551 +0.2774 +0.0034
10 2.5167 2.1989 -0.3178 -0.0172
11 2.2264 2.5369 +0.3105 -0.0029
12 2.6029 2.4913 +0.1117 +0.0069
13 2.2241 2.5528 +0.3287 -0.0026
14 2.5658 2.1949 -0.3709 -0.0179
15 2.5153 2.2278 +0.2876 +0.0032
16 2.5520 2.5156 +0.0364 +0.0090

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 +0.0347 -> computed delta -0.0090; 2.5890 -0.0090 = 2.5800