Initial VIPR
3.9020
Registry seed
Current VIPR
3.8518
After latest rated game
Net Movement
-0.0502
Current minus initial
Record
3-9
25% win rate · 12 rated games
Storyline
Fred Veenstra entered VIPR with an initial registry rating of 3.9020. Across 12 rated doubles games, the player went 3-9 and moved -0.0502, finishing at 3.8518.
Why It Moved
AI-generated explanation: The 3-9 record produced +0.0310 from wins and -0.0812 from losses, for a net move of -0.0502. The biggest single-game impact was +0.0118 against Craig Narod as partner and Jeff Fink / Martin Brady as opponents. In game #3 on 2026-07-02, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.9314 vs opponent team 3.9953.
Partner Chemistry
Partnership patterns are starting to emerge.
Fred's most common partner signals so far: Scott Konkel (1-1, 50%), Craig Narod (1-0, 100%), Matt Dame (1-0, 100%), Craig Vogel (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
Fred has faced Scott Konkel 4 times - record: 1-3. A tough matchup so far.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 1-3 | 3.9020 | 3.8909 | -0.0111 |
| 2026-07-09 | 0-4 | 3.8909 | 3.8524 | -0.0385 |
| 2026-07-16 | 2-2 | 3.8524 | 3.8518 | -0.0006 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Loss | 9-11 | Martin Brady | Joe Spano / Craig Narod | 3.9020 | -0.0068 | 3.8952 |
| 2 | 2026-07-02 | Loss | 9-11 | Jeff Fink | Joe Spano / Martin Brady | 3.8952 | -0.0088 | 3.8864 |
| 3 | 2026-07-02 | Win | 11-7 | Craig Narod | Jeff Fink / Martin Brady | 3.8864 | +0.0118 | 3.8982 |
| 4 | 2026-07-02 | Loss | 3-11 | Joe Spano | Jeff Fink / Craig Narod | 3.8982 | -0.0073 | 3.8909 |
| 5 | 2026-07-09 | Loss | 2-11 | Scott Konkel | Jerry Stotts / Pete Nikolakakis | 3.8909 | -0.0093 | 3.8816 |
| 6 | 2026-07-09 | Loss | 10-11 | Ken Vallance | Jerry Stotts / Scott Konkel | 3.8816 | -0.0102 | 3.8714 |
| 7 | 2026-07-09 | Loss | 4-11 | Pete Nikolakakis | Ken Vallance / Scott Konkel | 3.8714 | -0.0090 | 3.8624 |
| 8 | 2026-07-09 | Loss | 9-11 | Jerry Stotts | Ken Vallance / Pete Nikolakakis | 3.8624 | -0.0100 | 3.8524 |
| 9 | 2026-07-16 | Win | 11-7 | Scott Konkel | John Hayward / Craig Vogel | 3.8524 | +0.0093 | 3.8617 |
| 10 | 2026-07-16 | Loss | 8-11 | John Hayward | Matt Dame / John Ressler | 3.8617 | -0.0100 | 3.8517 |
| 11 | 2026-07-16 | Loss | 6-11 | Craig Vogel | Scott Konkel / John Ressler | 3.8517 | -0.0098 | 3.8419 |
| 12 | 2026-07-16 | Win | 11-10 | Matt Dame | Scott Konkel / John Hayward | 3.8419 | +0.0099 | 3.8518 |
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 | 3.9214 | 4.0365 | +0.1151 | -0.0068 |
| 2 | 3.9465 | 3.9897 | +0.0431 | -0.0088 |
| 3 | 3.9314 | 3.9953 | -0.0639 | +0.0118 |
| 4 | 3.9491 | 4.0465 | +0.0974 | -0.0073 |
| 5 | 3.8812 | 3.9072 | +0.0261 | -0.0093 |
| 6 | 3.9144 | 3.9078 | -0.0066 | -0.0102 |
| 7 | 3.8740 | 3.9088 | +0.0347 | -0.0090 |
| 8 | 3.9071 | 3.9068 | -0.0004 | -0.0100 |
| 9 | 3.8628 | 3.8380 | +0.0248 | +0.0093 |
| 10 | 3.8273 | 3.8287 | +0.0013 | -0.0100 |
| 11 | 3.8530 | 3.8584 | +0.0054 | -0.0098 |
| 12 | 3.8409 | 3.8367 | +0.0043 | +0.0099 |
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 +0.1151 -> computed delta -0.0068; 3.9020 -0.0068 = 3.8952