VIPR Rating Audit Trail

Debbie Fischer

Member ID: TVCPC-P0468   Generated: 2026-07-23 05:16 PM

3.1210 -> 3.1513
Net +0.0303   Record 9-7   Win Rate 56%   Games 16
Initial VIPR
3.1210
Registry seed
Current VIPR
3.1513
After latest rated game
Net Movement
+0.0303
Current minus initial
Record
9-7
56% win rate · 16 rated games

Storyline

Debbie Fischer entered VIPR with an initial registry rating of 3.1210. Across 16 rated doubles games, the player went 9-7 and moved +0.0303, finishing at 3.1513.

Why It Moved

AI-generated explanation: The 9-7 record produced +0.0873 from wins and -0.0570 from losses, for a net move of +0.0303. The biggest single-game impact was +0.0143 against Judith Lee as partner and Donna Siskind / Marcie Stern as opponents. In game #8 on 2026-07-09, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.1670 vs opponent team 3.3274.

Partner Chemistry

Partnership patterns are starting to emerge.

Debbie's most common partner signals so far: Rose Hoffmann (3-0, 100%), Marcie Stern (1-1, 50%), Deborah Ahart (0-2, 0%), Donna Siskind (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

Debbie has faced Rose Hoffmann 6 times - record: 3-3. A close matchup worth watching.

Session Summary

DateW-LStartEndNet
2026-07-02 2-2 3.1210 3.1281 +0.0071
2026-07-09 2-2 3.1281 3.1367 +0.0086
2026-07-16 3-1 3.1367 3.1485 +0.0118
2026-07-23 2-2 3.1485 3.1513 +0.0028

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-07-02 Loss 5-11 Sally Naumann Kathy Battle / Deborah Ahart 3.1210 -0.0083 3.1127
2 2026-07-02 Loss 6-11 Deborah Ahart Sally Naumann / Rose Hoffmann 3.1127 -0.0090 3.1037
3 2026-07-02 Win 11-8 Rose Hoffmann Kathy Battle / Sally Naumann 3.1037 +0.0141 3.1178
4 2026-07-02 Win 11-0 Kathy Battle Deborah Ahart / Rose Hoffmann 3.1178 +0.0103 3.1281
5 2026-07-09 Loss 9-11 Deborah Ahart Judith Lee / Donna Siskind 3.1281 -0.0054 3.1227
6 2026-07-09 Win 11-9 Donna Siskind Deborah Ahart / Marcie Stern 3.1227 +0.0093 3.1320
7 2026-07-09 Loss 5-11 Marcie Stern Judith Lee / Deborah Ahart 3.1320 -0.0096 3.1224
8 2026-07-09 Win 11-8 Judith Lee Donna Siskind / Marcie Stern 3.1224 +0.0143 3.1367
9 2026-07-16 Win 11-10 Marcie Stern Shawn Spaulding / Rose Hoffmann 3.1367 +0.0075 3.1442
10 2026-07-16 Loss 3-11 ANN DREWEK Marcie Stern / Shawn Spaulding 3.1442 -0.0040 3.1402
11 2026-07-16 Win 11-6 Shawn Spaulding Rose Hoffmann / ANN DREWEK 3.1402 +0.0046 3.1448
12 2026-07-16 Win 11-9 Rose Hoffmann Marcie Stern / ANN DREWEK 3.1448 +0.0037 3.1485
13 2026-07-23 Win 11-5 Lori Novack Denise Vinci / Gretchen S Kerr 3.1485 +0.0117 3.1602
14 2026-07-23 Loss 9-11 Gretchen S Kerr Lori Novack / Rose Hoffmann 3.1602 -0.0099 3.1503
15 2026-07-23 Win 11-10 Rose Hoffmann Denise Vinci / Lori Novack 3.1503 +0.0118 3.1621
16 2026-07-23 Loss 8-11 Denise Vinci Gretchen S Kerr / Rose Hoffmann 3.1621 -0.0108 3.1513

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 3.1657 3.2269 +0.0612 -0.0083
2 3.1420 3.1758 +0.0338 -0.0090
3 3.1203 3.2731 -0.1529 +0.0141
4 3.1695 3.1782 -0.0087 +0.0103
5 3.1437 3.3144 +0.1707 -0.0054
6 3.2297 3.2037 +0.0260 +0.0093
7 3.1741 3.1871 +0.0130 -0.0096
8 3.1670 3.3274 -0.1604 +0.0143
9 3.1702 3.0797 +0.0905 +0.0075
10 2.8593 3.1015 +0.2422 -0.0040
11 3.0689 2.8605 +0.2084 +0.0046
12 3.1472 2.8887 +0.2586 +0.0037
13 3.1589 3.2172 -0.0583 +0.0117
14 3.1653 3.1680 +0.0027 -0.0099
15 3.1580 3.2208 -0.0629 +0.0118
16 3.1941 3.1669 -0.0272 -0.0108

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 +0.0612 -> computed delta -0.0083; 3.1210 -0.0083 = 3.1127