Initial VIPR
2.5240
Registry seed
Current VIPR
2.5849
After latest rated game
Net Movement
+0.0609
Current minus initial
Record
9-3
75% win rate · 12 rated games
Storyline
Joy McCormick entered VIPR with an initial registry rating of 2.5240. Across 12 rated doubles games, the player went 9-3 and moved +0.0609, finishing at 2.5849.
Why It Moved
AI-generated explanation: The 9-3 record produced +0.0862 from wins and -0.0253 from losses, for a net move of +0.0609. The biggest single-game impact was +0.0167 against Carol Spano as partner and Kathi Lancaster / Jackie Huckins as opponents. In game #1 on 2026-07-09, the player's team was the lower-rated team, so the win carried a larger gain: player team 2.5347 vs opponent team 2.8162.
Partner Chemistry
Partnership patterns are starting to emerge.
Joy's most common partner signals so far: Michele Chew (1-1, 50%), ANN DREWEK (1-0, 100%), Barbara Giometti (1-0, 100%), Carol Spano (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
Joy has faced ANN DREWEK 3 times - record: 2-1. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-09 | 2-2 | 2.5240 | 2.5301 | +0.0061 |
| 2026-07-16 | 4-0 | 2.5301 | 2.5578 | +0.0277 |
| 2026-07-23 | 3-1 | 2.5578 | 2.5849 | +0.0271 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-09 | Win | 11-10 | Carol Spano | Kathi Lancaster / Jackie Huckins | 2.5240 | +0.0167 | 2.5407 |
| 2 | 2026-07-09 | Loss | 2-11 | Jackie Huckins | Carol Spano / Cynthia Speiran | 2.5407 | -0.0117 | 2.5290 |
| 3 | 2026-07-09 | Loss | 2-11 | Cynthia Speiran | Kathi Lancaster / Carol Spano | 2.5290 | -0.0037 | 2.5253 |
| 4 | 2026-07-09 | Win | 11-1 | Kathi Lancaster | Jackie Huckins / Cynthia Speiran | 2.5253 | +0.0048 | 2.5301 |
| 5 | 2026-07-16 | Win | 11-6 | Marie Shuey | Barbara Giometti / Pamela Uriarte | 2.5301 | +0.0025 | 2.5326 |
| 6 | 2026-07-16 | Win | 11-5 | Lynn Ratcliff | Marie Shuey / Barbara Giometti | 2.5326 | +0.0058 | 2.5384 |
| 7 | 2026-07-16 | Win | 11-0 | Barbara Giometti | Pamela Uriarte / Lynn Ratcliff | 2.5384 | +0.0048 | 2.5432 |
| 8 | 2026-07-16 | Win | 11-9 | Pamela Uriarte | Marie Shuey / Lynn Ratcliff | 2.5432 | +0.0146 | 2.5578 |
| 9 | 2026-07-23 | Win | 11-5 | Michele Chew | ANN DREWEK / Pilar Winters | 2.5578 | +0.0110 | 2.5688 |
| 10 | 2026-07-23 | Win | 11-4 | ANN DREWEK | Michele Chew / Pilar Winters | 2.5688 | +0.0118 | 2.5806 |
| 11 | 2026-07-23 | Win | 11-3 | Pilar Winters | Michele Chew / ANN DREWEK | 2.5806 | +0.0142 | 2.5948 |
| 12 | 2026-07-23 | Loss | 10-11 | Michele Chew | ANN DREWEK / Pilar Winters | 2.5948 | -0.0099 | 2.5849 |
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 | 2.5347 | 2.8162 | -0.2815 | +0.0167 |
| 2 | 2.5676 | 2.5076 | -0.0599 | -0.0117 |
| 3 | 2.5066 | 2.7671 | +0.2605 | -0.0037 |
| 4 | 2.7292 | 2.5288 | +0.2005 | +0.0048 |
| 5 | 2.3931 | 2.0580 | +0.3351 | +0.0025 |
| 6 | 2.3904 | 2.2364 | +0.1540 | +0.0058 |
| 7 | 2.2947 | 2.0947 | +0.2000 | +0.0048 |
| 8 | 2.1537 | 2.3264 | -0.1727 | +0.0146 |
| 9 | 2.6266 | 2.6606 | -0.0340 | +0.0110 |
| 10 | 2.6123 | 2.6748 | -0.0625 | +0.0118 |
| 11 | 2.5895 | 2.7438 | -0.1544 | +0.0142 |
| 12 | 2.6480 | 2.6505 | +0.0026 | -0.0099 |
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 -0.2815 -> computed delta +0.0167; 2.5240 +0.0167 = 2.5407