Initial VIPR
3.4740
Registry seed
Current VIPR
3.4642
After latest rated game
Net Movement
-0.0098
Current minus initial
Record
2-2
50% win rate · 4 rated games
Storyline
Donna Siskind entered VIPR with an initial registry rating of 3.4740. Across 4 rated doubles games, the player went 2-2 and moved -0.0098, finishing at 3.4642.
Why It Moved
AI-generated explanation: The 2-2 record produced +0.0147 from wins and -0.0245 from losses, for a net move of -0.0098. The biggest single-game impact was -0.0143 against Marcie Stern as partner and Judith Lee / Debbie Fischer as opponents. In game #4 on 2026-07-09, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.3274 vs opponent team 3.1670.
Partner Chemistry
Partnership patterns are starting to emerge.
Donna's most common partner signals so far: Debbie Fischer (1-0, 100%), Judith Lee (1-0, 100%), Deborah Ahart (0-1, 0%), Marcie Stern (0-1, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Streaks & Rivalries
Streak
Donna is currently on a 2-game losing streak in rated VIPR games.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-09 | 2-2 | 3.4740 | 3.4642 | -0.0098 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-09 | Win | 11-9 | Judith Lee | Deborah Ahart / Debbie Fischer | 3.4740 | +0.0054 | 3.4794 |
| 2 | 2026-07-09 | Win | 11-9 | Debbie Fischer | Deborah Ahart / Marcie Stern | 3.4794 | +0.0093 | 3.4887 |
| 3 | 2026-07-09 | Loss | 5-11 | Deborah Ahart | Judith Lee / Marcie Stern | 3.4887 | -0.0102 | 3.4785 |
| 4 | 2026-07-09 | Loss | 8-11 | Marcie Stern | Judith Lee / Debbie Fischer | 3.4785 | -0.0143 | 3.4642 |
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 | 3.3144 | 3.1437 | +0.1707 | +0.0054 |
| 2 | 3.2297 | 3.2037 | +0.0260 | +0.0093 |
| 3 | 3.2624 | 3.2546 | -0.0078 | -0.0102 |
| 4 | 3.3274 | 3.1670 | -0.1604 | -0.0143 |
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 +0.1707 -> computed delta +0.0054; 3.4740 +0.0054 = 3.4794