Initial VIPR
4.0790
Registry seed
Current VIPR
4.0530
After latest rated game
Net Movement
-0.0260
Current minus initial
Record
1-3
25% win rate · 4 rated games
Storyline
Jeff Fink entered VIPR with an initial registry rating of 4.0790. Across 4 rated doubles games, the player went 1-3 and moved -0.0260, finishing at 4.0530.
Why It Moved
AI-generated explanation: The 1-3 record produced +0.0073 from wins and -0.0333 from losses, for a net move of -0.0260. The biggest single-game impact was -0.0127 against Joe Spano as partner and Martin Brady / Craig Narod as opponents. In game #1 on 2026-07-02, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 4.0692 vs opponent team 3.9729.
Partner Chemistry
Partnership patterns are starting to emerge.
Jeff's most common partner signals so far: Craig Narod (1-0, 100%), Fred Veenstra (0-1, 0%), Joe Spano (0-1, 0%), Martin Brady (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
Jeff is currently on a 1-game winning streak in rated VIPR games.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 1-3 | 4.0790 | 4.0530 | -0.0260 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Loss | 0-11 | Joe Spano | Martin Brady / Craig Narod | 4.0790 | -0.0127 | 4.0663 |
| 2 | 2026-07-02 | Loss | 9-11 | Fred Veenstra | Joe Spano / Martin Brady | 4.0663 | -0.0088 | 4.0575 |
| 3 | 2026-07-02 | Loss | 7-11 | Martin Brady | Craig Narod / Fred Veenstra | 4.0575 | -0.0118 | 4.0457 |
| 4 | 2026-07-02 | Win | 11-3 | Craig Narod | Joe Spano / Fred Veenstra | 4.0457 | +0.0073 | 4.0530 |
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 | 4.0692 | 3.9729 | -0.0963 | -0.0127 |
| 2 | 3.9465 | 3.9897 | +0.0431 | -0.0088 |
| 3 | 3.9953 | 3.9314 | -0.0639 | -0.0118 |
| 4 | 4.0465 | 3.9491 | +0.0974 | +0.0073 |
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 -0.0963 -> computed delta -0.0127; 4.0790 -0.0127 = 4.0663