Initial VIPR
4.2150
Registry seed
Current VIPR
4.1792
After latest rated game
Net Movement
-0.0358
Current minus initial
Record
1-7
12% win rate · 8 rated games
Storyline
Bob Humphrey entered VIPR with an initial registry rating of 4.2150. Across 8 rated doubles games, the player went 1-7 and moved -0.0358, finishing at 4.1792.
Why It Moved
AI-generated explanation: The 1-7 record produced +0.0085 from wins and -0.0443 from losses, for a net move of -0.0358. The biggest single-game impact was -0.0177 against David Koleda as partner and Greg Dodge / Tad Leffelman as opponents. In game #2 on 2026-10-13, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 4.1038 vs opponent team 3.7473.
Partner Chemistry
Partnership patterns are starting to emerge.
Bob's most common partner signals so far: Mike Blackston (1-1, 50%), Cookie Sciacca (0-2, 0%), David Koleda (0-2, 0%), Ellen Huber (0-2, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Streaks & Rivalries
Rivalry
Bob 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 | 1-3 | 4.2150 | 4.1989 | -0.0161 |
| 2026-10-20 | 0-4 | 4.1989 | 4.1792 | -0.0197 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Win | 24-22 | Mike Blackston | Greg Dodge / Douglas Starn | 4.2150 | +0.0085 | 4.2235 |
| 2 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 17-21 | David Koleda | Greg Dodge / Tad Leffelman | 4.2235 | -0.0177 | 4.2058 |
| 3 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 24-25 | Ellen Huber | Mary Seifert / Greg Dodge | 4.2058 | -0.0017 | 4.2041 |
| 4 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 15-21 | Cookie Sciacca | Sandy Zutter / Greg Dodge | 4.2041 | -0.0052 | 4.1989 |
| 5 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 12-21 | David Koleda | Chris Eversole / Ken Vallance | 4.1989 | -0.0093 | 4.1896 |
| 6 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 15-21 | Ellen Huber | Nancy OBrien / Chris Eversole | 4.1896 | -0.0014 | 4.1882 |
| 7 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 10-21 | Cookie Sciacca | Barb O'Connor / Chris Eversole | 4.1882 | -0.0023 | 4.1859 |
| 8 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 17-21 | Mike Blackston | Chris Eversole / Mike Fritz | 4.1859 | -0.0067 | 4.1792 |
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 | 4.0239 | 3.9707 | +0.0532 | +0.0085 |
| 2 | 4.1038 | 3.7473 | -0.3565 | -0.0177 |
| 3 | 3.6651 | 4.0754 | +0.4103 | -0.0017 |
| 4 | 3.5370 | 3.7173 | +0.1803 | -0.0052 |
| 5 | 4.0820 | 4.1055 | +0.0235 | -0.0093 |
| 6 | 3.6535 | 4.1075 | +0.4539 | -0.0014 |
| 7 | 3.5224 | 3.8789 | +0.3566 | -0.0023 |
| 8 | 4.0531 | 4.1703 | +0.1172 | -0.0067 |
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 +0.0532 -> computed delta +0.0085; 4.2150 +0.0085 = 4.2235