Initial VIPR
4.0170
Registry seed
Current VIPR
4.0907
After latest rated game
Net Movement
+0.0737
Current minus initial
Record
9-2
82% win rate · 11 rated games
Storyline
Craig Narod entered VIPR with an initial registry rating of 4.0170. Across 11 rated doubles games, the player went 9-2 and moved +0.0737, finishing at 4.0907.
Why It Moved
AI-generated explanation: The 9-2 record produced +0.0947 from wins and -0.0210 from losses, for a net move of +0.0737. The biggest single-game impact was +0.0148 against Mark Burkowski as partner and Jim Keating / Bill Shoemaker as opponents. In game #9 on 2026-07-23, the player's team was the lower-rated team, so the win carried a larger gain: player team 4.0970 vs opponent team 4.2779.
Partner Chemistry
Partnership patterns are starting to emerge.
Craig's most common partner signals so far: Daren Haskell (2-0, 100%), Mark Burkowski (2-0, 100%), Martin Brady (2-0, 100%), Fred Veenstra (1-0, 100%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Streaks & Rivalries
Rivalry
Craig has faced Martin Brady 4 times - record: 4-0. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 4-0 | 4.0170 | 4.0556 | +0.0386 |
| 2026-07-09 | 3-1 | 4.0556 | 4.0741 | +0.0185 |
| 2026-07-23 | 2-1 | 4.0741 | 4.0907 | +0.0166 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Win | 11-0 | Martin Brady | Jeff Fink / Joe Spano | 4.0170 | +0.0127 | 4.0297 |
| 2 | 2026-07-02 | Win | 11-9 | Joe Spano | Martin Brady / Fred Veenstra | 4.0297 | +0.0068 | 4.0365 |
| 3 | 2026-07-02 | Win | 11-7 | Fred Veenstra | Jeff Fink / Martin Brady | 4.0365 | +0.0118 | 4.0483 |
| 4 | 2026-07-02 | Win | 11-3 | Jeff Fink | Joe Spano / Fred Veenstra | 4.0483 | +0.0073 | 4.0556 |
| 5 | 2026-07-09 | Win | 11-5 | Martin Brady | Mark Burkowski / William Danny Webster | 4.0556 | +0.0119 | 4.0675 |
| 6 | 2026-07-09 | Win | 11-5 | Daren Haskell | William Danny Webster / Martin Brady | 4.0675 | +0.0082 | 4.0757 |
| 7 | 2026-07-09 | Loss | 5-11 | William Danny Webster | Mark Burkowski / Daren Haskell | 4.0757 | -0.0088 | 4.0669 |
| 8 | 2026-07-09 | Win | 11-4 | Mark Burkowski | Martin Brady / Daren Haskell | 4.0669 | +0.0072 | 4.0741 |
| 9 | 2026-07-23 | Win | 11-10 | Mark Burkowski | Jim Keating / Bill Shoemaker | 4.0741 | +0.0148 | 4.0889 |
| 10 | 2026-07-23 | Loss | 5-11 | Bill Shoemaker | Mark Burkowski / Daren Haskell | 4.0889 | -0.0122 | 4.0767 |
| 11 | 2026-07-23 | Win | 11-6 | Daren Haskell | Jim Keating / Mark Burkowski | 4.0767 | +0.0140 | 4.0907 |
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 | 3.9729 | 4.0692 | -0.0963 | +0.0127 |
| 2 | 4.0365 | 3.9214 | +0.1151 | +0.0068 |
| 3 | 3.9314 | 3.9953 | -0.0639 | +0.0118 |
| 4 | 4.0465 | 3.9491 | +0.0974 | +0.0073 |
| 5 | 3.9865 | 4.0541 | -0.0676 | +0.0119 |
| 6 | 4.0419 | 3.9802 | +0.0617 | +0.0082 |
| 7 | 4.0218 | 4.0648 | +0.0430 | -0.0088 |
| 8 | 4.0868 | 3.9868 | +0.1000 | +0.0072 |
| 9 | 4.0970 | 4.2779 | -0.1809 | +0.0148 |
| 10 | 4.1477 | 4.0712 | -0.0765 | -0.0122 |
| 11 | 4.0532 | 4.2003 | -0.1471 | +0.0140 |
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 -0.0963 -> computed delta +0.0127; 4.0170 +0.0127 = 4.0297