Initial VIPR
3.6170
Registry seed
Current VIPR
3.6251
After latest rated game
Net Movement
+0.0081
Current minus initial
Record
2-2
50% win rate · 4 rated games
Storyline
Tad Leffelman entered VIPR with an initial registry rating of 3.6170. Across 4 rated doubles games, the player went 2-2 and moved +0.0081, finishing at 3.6251.
Why It Moved
AI-generated explanation: The 2-2 record produced +0.0239 from wins and -0.0158 from losses, for a net move of +0.0081. The biggest single-game impact was +0.0177 against Greg Dodge as partner and Bob Humphrey / David Koleda as opponents. In game #2 on 2026-10-13, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.7473 vs opponent team 4.1038.
Partner Chemistry
Partnership patterns are starting to emerge.
Tad's most common partner signals so far: Greg Dodge (1-0, 100%), Mary Seifert (1-0, 100%), Douglas Starn (0-1, 0%), Sandy Zutter (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
Tad has faced David Koleda 4 times - record: 2-2. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-13 | 2-2 | 3.6170 | 3.6251 | +0.0081 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 21-23 | Sandy Zutter | Cookie Sciacca / David Koleda | 3.6170 | -0.0125 | 3.6045 |
| 2 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Win | 21-17 | Greg Dodge | Bob Humphrey / David Koleda | 3.6045 | +0.0177 | 3.6222 |
| 3 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 17-21 | Douglas Starn | David Koleda / Mike Blackston | 3.6222 | -0.0033 | 3.6189 |
| 4 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Win | 21-12 | Mary Seifert | Ellen Huber / David Koleda | 3.6189 | +0.0062 | 3.6251 |
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 | 3.5744 | 3.4858 | -0.0886 | -0.0125 |
| 2 | 3.7473 | 4.1038 | -0.3565 | +0.0177 |
| 3 | 3.7045 | 3.9864 | +0.2819 | -0.0033 |
| 4 | 3.7534 | 3.6136 | +0.1398 | +0.0062 |
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; 3.6170 -0.0125 = 3.6045