Initial VIPR
4.0590
Registry seed
Current VIPR
4.0571
After latest rated game
Net Movement
-0.0019
Current minus initial
Record
7-5
58% win rate · 12 rated games
Storyline
Janna Armstrong entered VIPR with an initial registry rating of 4.0590. Across 12 rated doubles games, the player went 7-5 and moved -0.0019, finishing at 4.0571.
Why It Moved
AI-generated explanation: The record was positive, but the rating dipped because the 7 wins added +0.0405 while the 5 loss(es) gave back -0.0424. The biggest single-game impact was +0.0135 against Stacey Cellini as partner and Kelly Armagost / Sue Reich as opponents. In game #10 on 2026-07-16, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.7667 vs opponent team 3.8925.
Partner Chemistry
Partnership patterns are starting to emerge.
Janna's most common partner signals so far: Lori Mueller (2-0, 100%), Michele Blanchard (1-1, 50%), Eva Peters (1-0, 100%), Kelly Armagost (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
Janna has faced Michele Blanchard 5 times - record: 4-1. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 1-3 | 4.0590 | 4.0394 | -0.0196 |
| 2026-07-09 | 2-2 | 4.0394 | 4.0269 | -0.0125 |
| 2026-07-16 | 4-0 | 4.0269 | 4.0571 | +0.0302 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Loss | 8-11 | Tammy Quinn | Eva Peters / Diana Fuleky | 4.0590 | -0.0079 | 4.0511 |
| 2 | 2026-07-02 | Loss | 9-11 | Diana Fuleky | Tammy Quinn / Nancy OBrien | 4.0511 | -0.0130 | 4.0381 |
| 3 | 2026-07-02 | Loss | 6-11 | Nancy OBrien | Eva Peters / Tammy Quinn | 4.0381 | -0.0057 | 4.0324 |
| 4 | 2026-07-02 | Win | 11-7 | Eva Peters | Diana Fuleky / Nancy OBrien | 4.0324 | +0.0070 | 4.0394 |
| 5 | 2026-07-09 | Win | 11-8 | Lori Mueller | Laura Marchisello / Michele Blanchard | 4.0394 | +0.0016 | 4.0410 |
| 6 | 2026-07-09 | Loss | 8-11 | Michele Blanchard | Lori Mueller / Laura Marchisello | 4.0410 | -0.0034 | 4.0376 |
| 7 | 2026-07-09 | Loss | 5-11 | Laura Marchisello | Lori Mueller / Michele Blanchard | 4.0376 | -0.0124 | 4.0252 |
| 8 | 2026-07-09 | Win | 11-3 | Lori Mueller | Laura Marchisello / Michele Blanchard | 4.0252 | +0.0017 | 4.0269 |
| 9 | 2026-07-16 | Win | 11-8 | Kelly Armagost | Sue Reich / Michele Blanchard | 4.0269 | +0.0038 | 4.0307 |
| 10 | 2026-07-16 | Win | 11-10 | Stacey Cellini | Kelly Armagost / Sue Reich | 4.0307 | +0.0135 | 4.0442 |
| 11 | 2026-07-16 | Win | 11-3 | Sue Reich | Michele Blanchard / Stacey Cellini | 4.0442 | +0.0033 | 4.0475 |
| 12 | 2026-07-16 | Win | 11-6 | Michele Blanchard | Kelly Armagost / Stacey Cellini | 4.0475 | +0.0096 | 4.0571 |
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 | 4.0698 | 4.1439 | +0.0741 | -0.0079 |
| 2 | 4.0738 | 3.9659 | -0.1079 | -0.0130 |
| 3 | 3.9691 | 4.1280 | +0.1589 | -0.0057 |
| 4 | 4.0911 | 3.9841 | +0.1070 | +0.0070 |
| 5 | 4.1350 | 3.7126 | +0.4224 | +0.0016 |
| 6 | 3.7567 | 4.0298 | +0.2730 | -0.0034 |
| 7 | 3.9355 | 3.8510 | -0.0846 | -0.0124 |
| 8 | 4.1303 | 3.7146 | +0.4157 | +0.0017 |
| 9 | 3.9605 | 3.7111 | +0.2494 | +0.0038 |
| 10 | 3.7667 | 3.8925 | -0.1259 | +0.0135 |
| 11 | 3.9188 | 3.6396 | +0.2791 | +0.0033 |
| 12 | 3.7515 | 3.7381 | +0.0133 | +0.0096 |
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 +0.0741 -> computed delta -0.0079; 4.0590 -0.0079 = 4.0511