Initial VIPR
4.2550
Registry seed
Current VIPR
4.2471
After latest rated game
Net Movement
-0.0079
Current minus initial
Record
2-2
50% win rate · 4 rated games
Storyline
Doug Kellogg entered VIPR with an initial registry rating of 4.2550. Across 4 rated doubles games, the player went 2-2 and moved -0.0079, finishing at 4.2471.
Why It Moved
AI-generated explanation: The 2-2 record produced +0.0148 from wins and -0.0227 from losses, for a net move of -0.0079. The biggest single-game impact was -0.0138 against Tony Birchall as partner and Greg Dodge / Douglas Starn as opponents. In game #4 on 2026-10-20, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 4.0801 vs opponent team 3.9420.
Partner Chemistry
Partnership patterns are starting to emerge.
Doug's most common partner signals so far: Erin DeFrates (1-0, 100%), Gene Konzen (1-0, 100%), 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
Doug has faced Greg Dodge 4 times - record: 2-2. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-20 | 2-2 | 4.2550 | 4.2471 | -0.0079 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-20 Santiago Club - Team 3 vs Team 1 |
Win | 21-9 | Gene Konzen | Greg Dodge / Paul Randour | 4.2550 | +0.0092 | 4.2642 |
| 2 | 2026-10-20 Santiago Club - Team 3 vs Team 1 |
Loss | 15-21 | Sue Dahl | Mary Seifert / Greg Dodge | 4.2642 | -0.0089 | 4.2553 |
| 3 | 2026-10-20 Santiago Club - Team 3 vs Team 1 |
Win | 21-10 | Erin DeFrates | Sandy Zutter / Greg Dodge | 4.2553 | +0.0056 | 4.2609 |
| 4 | 2026-10-20 Santiago Club - Team 3 vs Team 1 |
Loss | 18-21 | Tony Birchall | Greg Dodge / Douglas Starn | 4.2609 | -0.0138 | 4.2471 |
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 | 4.1075 | 4.0805 | +0.0270 | +0.0092 |
| 2 | 4.0370 | 4.0744 | +0.0374 | -0.0089 |
| 3 | 3.8647 | 3.6998 | +0.1649 | +0.0056 |
| 4 | 4.0801 | 3.9420 | -0.1380 | -0.0138 |
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 +0.0270 -> computed delta +0.0092; 4.2550 +0.0092 = 4.2642