Initial VIPR
3.1890
Registry seed
Current VIPR
3.1688
After latest rated game
Net Movement
-0.0202
Current minus initial
Record
1-3
25% win rate · 4 rated games
Storyline
Gretchen S Kerr entered VIPR with an initial registry rating of 3.1890. Across 4 rated doubles games, the player went 1-3 and moved -0.0202, finishing at 3.1688.
Why It Moved
AI-generated explanation: The 1-3 record produced +0.0108 from wins and -0.0310 from losses, for a net move of -0.0202. The biggest single-game impact was -0.0117 against Denise Vinci as partner and Lori Novack / Debbie Fischer as opponents. In game #1 on 2026-07-23, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.2172 vs opponent team 3.1589.
Partner Chemistry
Partnership patterns are starting to emerge.
Gretchen's most common partner signals so far: Rose Hoffmann (1-0, 100%), Debbie Fischer (0-1, 0%), Denise Vinci (0-1, 0%), Lori Novack (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
Gretchen is currently on a 1-game winning streak in rated VIPR games.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-23 | 1-3 | 3.1890 | 3.1688 | -0.0202 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-23 | Loss | 5-11 | Denise Vinci | Lori Novack / Debbie Fischer | 3.1890 | -0.0117 | 3.1773 |
| 2 | 2026-07-23 | Loss | 9-11 | Debbie Fischer | Lori Novack / Rose Hoffmann | 3.1773 | -0.0099 | 3.1674 |
| 3 | 2026-07-23 | Loss | 7-11 | Lori Novack | Denise Vinci / Rose Hoffmann | 3.1674 | -0.0094 | 3.1580 |
| 4 | 2026-07-23 | Win | 11-8 | Rose Hoffmann | Denise Vinci / Debbie Fischer | 3.1580 | +0.0108 | 3.1688 |
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 | 3.2172 | 3.1589 | -0.0583 | -0.0117 |
| 2 | 3.1653 | 3.1680 | +0.0027 | -0.0099 |
| 3 | 3.1786 | 3.1979 | +0.0194 | -0.0094 |
| 4 | 3.1669 | 3.1941 | -0.0272 | +0.0108 |
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 -0.0583 -> computed delta -0.0117; 3.1890 -0.0117 = 3.1773