Initial VIPR
2.8770
Registry seed
Current VIPR
2.8710
After latest rated game
Net Movement
-0.0060
Current minus initial
Record
4-4
50% win rate · 8 rated games
Storyline
Debbie Chaffee entered VIPR with an initial registry rating of 2.8770. Across 8 rated doubles games, the player went 4-4 and moved -0.0060, finishing at 2.8710.
Why It Moved
AI-generated explanation: The 4-4 record produced +0.0402 from wins and -0.0462 from losses, for a net move of -0.0060. The biggest single-game impact was -0.0154 against Kathi Lancaster as partner and Beth Arms / Barbara Amato as opponents. In game #4 on 2026-07-02, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 2.9785 vs opponent team 2.7685.
Partner Chemistry
Partnership patterns are starting to emerge.
Debbie's most common partner signals so far: Deborah Austin (0-2, 0%), ANN DREWEK (1-0, 100%), Beth Arms (1-0, 100%), Darleen Obrien (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 Deborah Austin 4 times - record: 3-1. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 1-3 | 2.8770 | 2.8568 | -0.0202 |
| 2026-07-09 | 3-1 | 2.8568 | 2.8710 | +0.0142 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Win | 11-7 | Beth Arms | Deborah Austin / Kathi Lancaster | 2.8770 | +0.0130 | 2.8900 |
| 2 | 2026-07-02 | Loss | 7-11 | Barbara Amato | Beth Arms / Deborah Austin | 2.8900 | -0.0076 | 2.8824 |
| 3 | 2026-07-02 | Loss | 2-11 | Deborah Austin | Kathi Lancaster / Barbara Amato | 2.8824 | -0.0102 | 2.8722 |
| 4 | 2026-07-02 | Loss | 2-11 | Kathi Lancaster | Beth Arms / Barbara Amato | 2.8722 | -0.0154 | 2.8568 |
| 5 | 2026-07-09 | Loss | 2-11 | Deborah Austin | Darleen Obrien / ANN DREWEK | 2.8568 | -0.0130 | 2.8438 |
| 6 | 2026-07-09 | Win | 11-3 | ANN DREWEK | Darleen Obrien / Fern S Reisinger | 2.8438 | +0.0094 | 2.8532 |
| 7 | 2026-07-09 | Win | 11-4 | Darleen Obrien | Deborah Austin / Fern S Reisinger | 2.8532 | +0.0069 | 2.8601 |
| 8 | 2026-07-09 | Win | 11-3 | Fern S Reisinger | Deborah Austin / ANN DREWEK | 2.8601 | +0.0109 | 2.8710 |
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 | 2.8665 | 2.9748 | -0.1083 | +0.0130 |
| 2 | 2.7737 | 2.8600 | +0.0863 | -0.0076 |
| 3 | 2.8733 | 2.8662 | -0.0071 | -0.0102 |
| 4 | 2.9785 | 2.7685 | -0.2099 | -0.0154 |
| 5 | 2.8575 | 2.7506 | -0.1069 | -0.0130 |
| 6 | 2.7620 | 2.7398 | +0.0222 | +0.0094 |
| 7 | 2.8437 | 2.7324 | +0.1113 | +0.0069 |
| 8 | 2.7415 | 2.7729 | -0.0313 | +0.0109 |
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 -0.1083 -> computed delta +0.0130; 2.8770 +0.0130 = 2.8900