Initial VIPR
3.6060
Registry seed
Current VIPR
3.5511
After latest rated game
Net Movement
-0.0549
Current minus initial
Record
8-12
40% win rate · 20 rated games
Storyline
Sandy Zutter entered VIPR with an initial registry rating of 3.6060. Across 20 rated doubles games, the player went 8-12 and moved -0.0549, finishing at 3.5511.
Why It Moved
AI-generated explanation: The 8-12 record produced +0.0687 from wins and -0.1236 from losses, for a net move of -0.0549. The biggest single-game impact was -0.0145 against Lucille Gambescia as partner and Laura Marchisello / Carolyn Roan as opponents. In game #14 on 2026-08-27, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.7763 vs opponent team 3.6072.
Partner Chemistry
Partnership patterns are starting to emerge.
Sandy's most common partner signals so far: Sharon McFarland (2-1, 67%), Gina M Park (1-1, 50%), Andrea Fairchild (0-2, 0%), Lucille Gambescia (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
Sandy has faced Sharon McFarland 6 times - record: 3-3. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 2-2 | 3.6060 | 3.6073 | +0.0013 |
| 2026-08-13 | 2-2 | 3.6073 | 3.6010 | -0.0063 |
| 2026-08-20 | 2-2 | 3.6010 | 3.5978 | -0.0032 |
| 2026-08-27 | 0-4 | 3.5978 | 3.5593 | -0.0385 |
| 2026-09-03 | 2-2 | 3.5593 | 3.5511 | -0.0082 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Loss | 6-11 | Michele Blanchard | Sue Reich / Erin DeFrates | 3.6060 | -0.0065 | 3.5995 |
| 2 | 2026-07-02 | Win | 11-9 | Erin DeFrates | Michele Blanchard / Sharon McFarland | 3.5995 | +0.0068 | 3.6063 |
| 3 | 2026-07-02 | Loss | 3-11 | Sharon McFarland | Sue Reich / Michele Blanchard | 3.6063 | -0.0047 | 3.6016 |
| 4 | 2026-07-02 | Win | 11-6 | Sue Reich | Erin DeFrates / Sharon McFarland | 3.6016 | +0.0057 | 3.6073 |
| 5 | 2026-08-13 | Win | 11-6 | Nancy Alban | Gina M Park / Andrea Fairchild | 3.6073 | +0.0078 | 3.6151 |
| 6 | 2026-08-13 | Win | 11-9 | Sharon McFarland | Gina M Park / Nancy Alban | 3.6151 | +0.0090 | 3.6241 |
| 7 | 2026-08-13 | Loss | 9-11 | Andrea Fairchild | Sharon McFarland / Nancy Alban | 3.6241 | -0.0101 | 3.6140 |
| 8 | 2026-08-13 | Loss | 10-11 | Gina M Park | Sharon McFarland / Andrea Fairchild | 3.6140 | -0.0130 | 3.6010 |
| 9 | 2026-08-20 | Win | 11-1 | Sharon McFarland | Jolynne Colvin / Diane McCarthy | 3.6010 | +0.0117 | 3.6127 |
| 10 | 2026-08-20 | Win | 11-1 | Gina M Park | Diane McCarthy / Sharon McFarland | 3.6127 | +0.0102 | 3.6229 |
| 11 | 2026-08-20 | Loss | 6-11 | Diane McCarthy | Jolynne Colvin / Gina M Park | 3.6229 | -0.0114 | 3.6115 |
| 12 | 2026-08-20 | Loss | 6-11 | Jolynne Colvin | Sharon McFarland / Gina M Park | 3.6115 | -0.0137 | 3.5978 |
| 13 | 2026-08-27 | Loss | 2-11 | Carolyn Roan | Lucille Gambescia / Laura Marchisello | 3.5978 | -0.0016 | 3.5962 |
| 14 | 2026-08-27 | Loss | 6-11 | Lucille Gambescia | Laura Marchisello / Carolyn Roan | 3.5962 | -0.0145 | 3.5817 |
| 15 | 2026-08-27 | Loss | 6-11 | Laura Marchisello | Lucille Gambescia / Carolyn Roan | 3.5817 | -0.0087 | 3.5730 |
| 16 | 2026-08-27 | Loss | 2-11 | Lucille Gambescia | Laura Marchisello / Carolyn Roan | 3.5730 | -0.0137 | 3.5593 |
| 17 | 2026-09-03 | Loss | 8-11 | Zeneida Toledo | Kathy Battle / Judy Arlington | 3.5593 | -0.0134 | 3.5459 |
| 18 | 2026-09-03 | Loss | 7-11 | Andrea Fairchild | Zeneida Toledo / Kathy Battle | 3.5459 | -0.0123 | 3.5336 |
| 19 | 2026-09-03 | Win | 11-3 | Kathy Battle | Judy Arlington / Andrea Fairchild | 3.5336 | +0.0078 | 3.5414 |
| 20 | 2026-09-03 | Win | 11-7 | Judy Arlington | Zeneida Toledo / Andrea Fairchild | 3.5414 | +0.0097 | 3.5511 |
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 | 3.6153 | 3.7419 | +0.1266 | -0.0065 |
| 2 | 3.6286 | 3.5126 | +0.1160 | +0.0068 |
| 3 | 3.4949 | 3.7007 | +0.2058 | -0.0047 |
| 4 | 3.6809 | 3.5231 | +0.1578 | +0.0057 |
| 5 | 3.5006 | 3.4240 | +0.0766 | +0.0078 |
| 6 | 3.5011 | 3.4673 | +0.0337 | +0.0090 |
| 7 | 3.4599 | 3.4559 | -0.0040 | -0.0101 |
| 8 | 3.5128 | 3.4070 | -0.1058 | -0.0130 |
| 9 | 3.5193 | 3.5802 | -0.0609 | +0.0117 |
| 10 | 3.5033 | 3.5113 | -0.0080 | +0.0102 |
| 11 | 3.5626 | 3.5123 | -0.0503 | -0.0114 |
| 12 | 3.6171 | 3.4803 | -0.1368 | -0.0137 |
| 13 | 3.5298 | 3.9590 | +0.4291 | -0.0016 |
| 14 | 3.7763 | 3.6072 | -0.1691 | -0.0145 |
| 15 | 3.6694 | 3.7142 | +0.0448 | -0.0087 |
| 16 | 3.7583 | 3.6252 | -0.1332 | -0.0137 |
| 17 | 3.4271 | 3.3059 | -0.1211 | -0.0134 |
| 18 | 3.4305 | 3.3502 | -0.0804 | -0.0123 |
| 19 | 3.4084 | 3.3318 | +0.0766 | +0.0078 |
| 20 | 3.3781 | 3.3669 | +0.0112 | +0.0097 |
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 +0.1266 -> computed delta -0.0065; 3.6060 -0.0065 = 3.5995