Initial VIPR
3.6060
Registry seed
Current VIPR
3.6073
After latest rated game
Net Movement
+0.0013
Current minus initial
Record
2-2
50% win rate · 4 rated games
Storyline
Sandy Zutter entered VIPR with an initial registry rating of 3.6060. Across 4 rated doubles games, the player went 2-2 and moved +0.0013, finishing at 3.6073.
Why It Moved
AI-generated explanation: The 2-2 record produced +0.0125 from wins and -0.0112 from losses, for a net move of +0.0013. The biggest single-game impact was +0.0068 against Erin DeFrates as partner and Michele Blanchard / Sharon McFarland as opponents. In game #2 on 2026-07-02, VIPR expected the player's team to have the edge, so the win carried a smaller gain: player team 3.6286 vs opponent team 3.5126.
Partner Chemistry
Partnership patterns are starting to emerge.
Sandy's most common partner signals so far: Erin DeFrates (1-0, 100%), Sue Reich (1-0, 100%), Michele Blanchard (0-1, 0%), Sharon McFarland (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
Sandy is currently on a 1-game winning streak in rated VIPR games.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 2-2 | 3.6060 | 3.6073 | +0.0013 |
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 |
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 |
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