Initial VIPR
4.3630
Registry seed
Current VIPR
4.3227
After latest rated game
Net Movement
-0.0403
Current minus initial
Record
0-4
0% win rate · 4 rated games
Storyline
Tom Hertz entered VIPR with an initial registry rating of 4.3630. Across 4 rated doubles games, the player went 0-4 and moved -0.0403, finishing at 4.3227.
Why It Moved
AI-generated explanation: The 0-4 record produced +0.0000 from wins and -0.0403 from losses, for a net move of -0.0403. The biggest single-game impact was -0.0116 against Erin DeFrates as partner and Barb O'Connor / Chris Eversole as opponents. In game #3 on 2026-10-13, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.8998 vs opponent team 3.8425.
Partner Chemistry
Partnership patterns are starting to emerge.
Tom's most common partner signals so far: Erin DeFrates (0-1, 0%), Gene Konzen (0-1, 0%), Sue Dahl (0-1, 0%), Tony Birchall (0-1, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Streaks & Rivalries
Rivalry
Tom has faced Chris Eversole 4 times - record: 0-4. A tough matchup so far.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-13 | 0-4 | 4.3630 | 4.3227 | -0.0403 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Loss | 10-21 | Tony Birchall | Chris Eversole / Mike Fritz | 4.3630 | -0.0089 | 4.3541 |
| 2 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Loss | 19-21 | Sue Dahl | Nancy OBrien / Chris Eversole | 4.3541 | -0.0095 | 4.3446 |
| 3 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Loss | 15-21 | Erin DeFrates | Barb O'Connor / Chris Eversole | 4.3446 | -0.0116 | 4.3330 |
| 4 | 2026-10-13 Santiago Club - Team 3 vs Team 4 |
Loss | 16-21 | Gene Konzen | Chris Eversole / Stephen Bussey | 4.3330 | -0.0103 | 4.3227 |
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 | 4.1152 | 4.1522 | +0.0370 | -0.0089 |
| 2 | 4.0663 | 4.0820 | +0.0158 | -0.0095 |
| 3 | 3.8998 | 3.8425 | -0.0574 | -0.0116 |
| 4 | 4.1381 | 4.1264 | -0.0117 | -0.0103 |
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 +0.0370 -> computed delta -0.0089; 4.3630 -0.0089 = 4.3541