Initial VIPR
4.0400
Registry seed
Current VIPR
4.0659
After latest rated game
Net Movement
+0.0259
Current minus initial
Record
5-3
62% win rate · 8 rated games
Storyline
David Koleda entered VIPR with an initial registry rating of 4.0400. Across 8 rated doubles games, the player went 5-3 and moved +0.0259, finishing at 4.0659.
Why It Moved
AI-generated explanation: The 5-3 record produced +0.0591 from wins and -0.0332 from losses, for a net move of +0.0259. The biggest single-game impact was -0.0177 against Bob Humphrey 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.
David's most common partner signals so far: Cookie Sciacca (2-0, 100%), Mike Blackston (2-0, 100%), Ellen Huber (1-1, 50%), Bob Humphrey (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
David has faced Ken Vallance 4 times - record: 3-1. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-13 | 2-2 | 4.0400 | 4.0319 | -0.0081 |
| 2026-10-20 | 3-1 | 4.0319 | 4.0659 | +0.0340 |
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 | 23-21 | Cookie Sciacca | Sandy Zutter / Tad Leffelman | 4.0400 | +0.0125 | 4.0525 |
| 2 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 17-21 | Bob Humphrey | Greg Dodge / Tad Leffelman | 4.0525 | -0.0177 | 4.0348 |
| 3 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Win | 21-17 | Mike Blackston | Tad Leffelman / Douglas Starn | 4.0348 | +0.0033 | 4.0381 |
| 4 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 12-21 | Ellen Huber | Mary Seifert / Tad Leffelman | 4.0381 | -0.0062 | 4.0319 |
| 5 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Loss | 12-21 | Bob Humphrey | Chris Eversole / Ken Vallance | 4.0319 | -0.0093 | 4.0226 |
| 6 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Win | 22-20 | Mike Blackston | Ken Vallance / Mike Fritz | 4.0226 | +0.0097 | 4.0323 |
| 7 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Win | 21-14 | Ellen Huber | Nancy OBrien / Ken Vallance | 4.0323 | +0.0176 | 4.0499 |
| 8 | 2026-10-20 Santiago Club - Team 4 vs Team 2 |
Win | 21-15 | Cookie Sciacca | Barb O'Connor / Ken Vallance | 4.0499 | +0.0160 | 4.0659 |
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 | 3.4858 | 3.5744 | -0.0886 | +0.0125 |
| 2 | 4.1038 | 3.7473 | -0.3565 | -0.0177 |
| 3 | 3.9864 | 3.7045 | +0.2819 | +0.0033 |
| 4 | 3.6136 | 3.7534 | +0.1398 | -0.0062 |
| 5 | 4.0820 | 4.1055 | +0.0235 | -0.0093 |
| 6 | 3.9973 | 3.9870 | +0.0104 | +0.0097 |
| 7 | 3.6054 | 3.9512 | -0.3458 | +0.0176 |
| 8 | 3.4793 | 3.7179 | -0.2386 | +0.0160 |
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 -0.0886 -> computed delta +0.0125; 4.0400 +0.0125 = 4.0525