Initial VIPR
3.9140
Registry seed
Current VIPR
3.9163
After latest rated game
Net Movement
+0.0023
Current minus initial
Record
7-5
58% win rate · 12 rated games
Storyline
Nancy OBrien entered VIPR with an initial registry rating of 3.9140. Across 12 rated doubles games, the player went 7-5 and moved +0.0023, finishing at 3.9163.
Why It Moved
AI-generated explanation: The 7-5 record produced +0.0603 from wins and -0.0580 from losses, for a net move of +0.0023. The biggest single-game impact was -0.0178 against Mike Fritz as partner and Ellen Huber / Mike Blackston as opponents. In game #12 on 2026-10-20, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.9674 vs opponent team 3.6048.
Partner Chemistry
Partnership patterns are starting to emerge.
Nancy's most common partner signals so far: Barb O'Connor (2-0, 100%), Chris Eversole (2-0, 100%), Mike Fritz (1-1, 50%), Eva Peters (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
Nancy has faced Sue Dahl 4 times - record: 3-1. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 2-2 | 3.9140 | 3.9269 | +0.0129 |
| 2026-10-13 | 3-1 | 3.9269 | 3.9486 | +0.0217 |
| 2026-10-20 | 2-2 | 3.9486 | 3.9163 | -0.0323 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 Thursday Ladies Ladder League - SUMMER 2026 |
Win | 11-9 | Tammy Quinn | Diana Fuleky / Janna Armstrong | 3.9140 | +0.0130 | 3.9270 |
| 2 | 2026-07-02 Thursday Ladies Ladder League - SUMMER 2026 |
Win | 11-8 | Eva Peters | Diana Fuleky / Tammy Quinn | 3.9270 | +0.0126 | 3.9396 |
| 3 | 2026-07-02 Thursday Ladies Ladder League - SUMMER 2026 |
Loss | 6-11 | Janna Armstrong | Eva Peters / Tammy Quinn | 3.9396 | -0.0057 | 3.9339 |
| 4 | 2026-07-02 Thursday Ladies Ladder League - SUMMER 2026 |
Loss | 7-11 | Diana Fuleky | Eva Peters / Janna Armstrong | 3.9339 | -0.0070 | 3.9269 |
| 5 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Win | 21-16 | Mike Fritz | Sue Dahl / Tony Birchall | 3.9269 | +0.0101 | 3.9370 |
| 6 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Win | 21-19 | Chris Eversole | Sue Dahl / Tom Hertz | 3.9370 | +0.0095 | 3.9465 |
| 7 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Loss | 17-21 | Stephen Bussey | Sue Dahl / Gene Konzen | 3.9465 | -0.0099 | 3.9366 |
| 8 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Win | 21-17 | Barb O'Connor | Sue Dahl / Erin DeFrates | 3.9366 | +0.0120 | 3.9486 |
| 9 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Win | 21-15 | Barb O'Connor | Ellen Huber / Cookie Sciacca | 3.9486 | +0.0017 | 3.9503 |
| 10 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Win | 21-15 | Chris Eversole | Ellen Huber / Bob Humphrey | 3.9503 | +0.0014 | 3.9517 |
| 11 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 14-21 | Ken Vallance | Ellen Huber / David Koleda | 3.9517 | -0.0176 | 3.9341 |
| 12 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 24-25 | Mike Fritz | Ellen Huber / Mike Blackston | 3.9341 | -0.0178 | 3.9163 |
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 Diff | Computed Delta |
|---|---|---|---|---|
| 1 | 3.9659 | 4.0738 | -0.1079 | +0.0130 |
| 2 | 4.0119 | 4.1042 | -0.0924 | +0.0126 |
| 3 | 3.9691 | 4.1280 | +0.1589 | -0.0057 |
| 4 | 3.9841 | 4.0911 | +0.1070 | -0.0070 |
| 5 | 3.9638 | 3.9671 | -0.0033 | +0.0101 |
| 6 | 4.0820 | 4.0663 | +0.0158 | +0.0095 |
| 7 | 3.9629 | 3.9668 | +0.0038 | -0.0099 |
| 8 | 3.7026 | 3.7713 | -0.0687 | +0.0120 |
| 9 | 3.7146 | 3.2998 | +0.4148 | +0.0017 |
| 10 | 4.1075 | 3.6535 | +0.4539 | +0.0014 |
| 11 | 3.9512 | 3.6054 | -0.3458 | -0.0176 |
| 12 | 3.9674 | 3.6048 | -0.3626 | -0.0178 |
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 -0.1079 -> computed delta +0.0130; 3.9140 +0.0130 = 3.9270