Storyline
Kathy Battle entered VIPR with an initial registry rating of 3.2850. Across 4 rated doubles games, the player went 3-1 and moved +0.0154, finishing at 3.3004.
Why It Moved
AI-generated explanation: The 3-1 record produced +0.0295 from wins and -0.0141 from losses, for a net move of +0.0154. The biggest single-game impact was -0.0141 against Sally Naumann as partner and Debbie Fischer / Rose Hoffmann as opponents. In game #3 on 2026-07-02, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.2731 vs opponent team 3.1203.
Partnership patterns are starting to emerge.
Kathy's most common partner signals so far: Debbie Fischer (1-0, 100%), Deborah Ahart (1-0, 100%), Rose Hoffmann (1-0, 100%), Sally Naumann (0-1, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Kathy is currently on a 1-game winning streak in rated VIPR games.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 3-1 | 3.2850 | 3.3004 | +0.0154 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Win | 11-5 | Deborah Ahart | Sally Naumann / Debbie Fischer | 3.2850 | +0.0083 | 3.2933 |
| 2 | 2026-07-02 | Win | 11-6 | Rose Hoffmann | Deborah Ahart / Sally Naumann | 3.2933 | +0.0109 | 3.3042 |
| 3 | 2026-07-02 | Loss | 8-11 | Sally Naumann | Debbie Fischer / Rose Hoffmann | 3.3042 | -0.0141 | 3.2901 |
| 4 | 2026-07-02 | Win | 11-0 | Debbie Fischer | Deborah Ahart / Rose Hoffmann | 3.2901 | +0.0103 | 3.3004 |
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 | 3.2269 | 3.1657 | +0.0612 | +0.0083 |
| 2 | 3.1916 | 3.2221 | -0.0305 | +0.0109 |
| 3 | 3.2731 | 3.1203 | -0.1529 | -0.0141 |
| 4 | 3.1695 | 3.1782 | -0.0087 | +0.0103 |
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; 3.2850 +0.0083 = 3.2933