Initial VIPR
3.2500
Registry seed
Current VIPR
3.2507
After latest rated game
Net Movement
+0.0007
Current minus initial
Record
2-6
25% win rate · 8 rated games
Storyline
Cookie Sciacca entered VIPR with an initial registry rating of 3.2500. Across 8 rated doubles games, the player went 2-6 and moved +0.0007, finishing at 3.2507.
Why It Moved
AI-generated explanation: The record was below .500, but the rating rose because the 2 win(s) added +0.0285 against stronger situations while the 6 losses cost -0.0278. The biggest single-game impact was +0.0160 against David Koleda as partner and Barb O'Connor / Ken Vallance as opponents. In game #8 on 2026-10-20, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.4793 vs opponent team 3.7179.
Partner Chemistry
Partnership patterns are starting to emerge.
Cookie's most common partner signals so far: David Koleda (2-0, 100%), Bob Humphrey (0-2, 0%), Ellen Huber (0-2, 0%), Kirstin Burri (0-2, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Streaks & Rivalries
Rivalry
Cookie has faced Barb O'Connor 4 times - record: 1-3. A tough matchup so far.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-13 | 1-3 | 3.2500 | 3.2459 | -0.0041 |
| 2026-10-20 | 1-3 | 3.2459 | 3.2507 | +0.0048 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 12-21 | Ellen Huber | Mary Seifert / Sandy Zutter | 3.2500 | -0.0017 | 3.2483 |
| 2 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Win | 23-21 | David Koleda | Sandy Zutter / Tad Leffelman | 3.2483 | +0.0125 | 3.2608 |
| 3 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 18-21 | Kirstin Burri | Sandy Zutter / Kerry Ferrero | 3.2608 | -0.0097 | 3.2511 |
| 4 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 15-21 | Bob Humphrey | Sandy Zutter / Greg Dodge | 3.2511 | -0.0052 | 3.2459 |
| 5 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 15-21 | Ellen Huber | Nancy OBrien / Barb O'Connor | 3.2459 | -0.0017 | 3.2442 |
| 6 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 17-21 | Kirstin Burri | Barb O'Connor / Debbie Hellman | 3.2442 | -0.0072 | 3.2370 |
| 7 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 10-21 | Bob Humphrey | Barb O'Connor / Chris Eversole | 3.2370 | -0.0023 | 3.2347 |
| 8 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Win | 21-15 | David Koleda | Barb O'Connor / Ken Vallance | 3.2347 | +0.0160 | 3.2507 |
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 | 3.3001 | 3.7127 | +0.4126 | -0.0017 |
| 2 | 3.4858 | 3.5744 | -0.0886 | +0.0125 |
| 3 | 3.3021 | 3.3133 | +0.0112 | -0.0097 |
| 4 | 3.5370 | 3.7173 | +0.1803 | -0.0052 |
| 5 | 3.2998 | 3.7146 | +0.4148 | -0.0017 |
| 6 | 3.2900 | 3.3881 | +0.0981 | -0.0072 |
| 7 | 3.5224 | 3.8789 | +0.3566 | -0.0023 |
| 8 | 3.4793 | 3.7179 | -0.2386 | +0.0160 |
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 +0.4126 -> computed delta -0.0017; 3.2500 -0.0017 = 3.2483