Initial VIPR
4.0170
Registry seed
Current VIPR
4.1252
After latest rated game
Net Movement
+0.1082
Current minus initial
Record
19-7
73% win rate · 26 rated games
Storyline
Craig Narod entered VIPR with an initial registry rating of 4.0170. Across 26 rated doubles games, the player went 19-7 and moved +0.1082, finishing at 4.1252.
Why It Moved
AI-generated explanation: The 19-7 record produced +0.1844 from wins and -0.0762 from losses, for a net move of +0.1082. The biggest single-game impact was +0.0196 against Ramon Jimenez as partner and Jason Johnson / Ken Vallance as opponents. In game #21 on 2026-08-27, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.4103 vs opponent team 4.0704.
Partner Chemistry
Partnership patterns are starting to emerge.
Craig's most common partner signals so far: Martin Brady (2-1, 67%), Daren Haskell (2-0, 100%), Joe Spano (2-0, 100%), Mark Burkowski (2-0, 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 5 times - record: 5-0. 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 |
| 2026-08-06 | 1-3 | 4.0907 | 4.0757 | -0.0150 |
| 2026-08-20 | 3-1 | 4.0757 | 4.0914 | +0.0157 |
| 2026-08-27 | 2-1 | 4.0914 | 4.0977 | +0.0063 |
| 2026-09-03 | 4-0 | 4.0977 | 4.1252 | +0.0275 |
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 |
| 12 | 2026-08-06 | Loss | 8-11 | Richard Whittington | Bill Shoemaker / Jason Johnson | 4.0907 | -0.0059 | 4.0848 |
| 13 | 2026-08-06 | Loss | 10-11 | Jim Keating | Bill Shoemaker / Richard Whittington | 4.0848 | -0.0107 | 4.0741 |
| 14 | 2026-08-06 | Loss | 4-11 | Jason Johnson | Jim Keating / Richard Whittington | 4.0741 | -0.0101 | 4.0640 |
| 15 | 2026-08-06 | Win | 11-5 | Bill Shoemaker | Jim Keating / Jason Johnson | 4.0640 | +0.0117 | 4.0757 |
| 16 | 2026-08-20 | Win | 11-1 | Jim Suminski | Chris Donahue / Joe Spano | 4.0757 | +0.0049 | 4.0806 |
| 17 | 2026-08-20 | Win | 11-7 | Joe Spano | Chris Donahue / Tim Tonguis | 4.0806 | +0.0039 | 4.0845 |
| 18 | 2026-08-20 | Loss | 7-11 | Chris Donahue | Jim Suminski / Tim Tonguis | 4.0845 | -0.0093 | 4.0752 |
| 19 | 2026-08-20 | Win | 11-8 | Tim Tonguis | Jim Suminski / Joe Spano | 4.0752 | +0.0162 | 4.0914 |
| 20 | 2026-08-27 | Win | 11-5 | Jason Johnson | Ken Vallance / Martin Brady | 4.0914 | +0.0059 | 4.0973 |
| 21 | 2026-08-27 | Win | 11-6 | Ramon Jimenez | Jason Johnson / Ken Vallance | 4.0973 | +0.0196 | 4.1169 |
| 22 | 2026-08-27 | Loss | 2-11 | Martin Brady | Jason Johnson / Ramon Jimenez | 4.1169 | -0.0192 | 4.0977 |
| 23 | 2026-09-03 | Win | 11-2 | Chris Donahue | Ramon Jimenez / William Danny Webster | 4.0977 | +0.0008 | 4.0985 |
| 24 | 2026-09-03 | Win | 11-8 | Scott Konkel | Chris Donahue / Ramon Jimenez | 4.0985 | +0.0006 | 4.0991 |
| 25 | 2026-09-03 | Win | 11-7 | Ramon Jimenez | William Danny Webster / Scott Konkel | 4.0991 | +0.0189 | 4.1180 |
| 26 | 2026-09-03 | Win | 11-8 | William Danny Webster | Chris Donahue / Scott Konkel | 4.1180 | +0.0072 | 4.1252 |
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 |
| 12 | 4.0549 | 4.2056 | +0.1507 | -0.0059 |
| 13 | 4.1330 | 4.1088 | -0.0241 | -0.0107 |
| 14 | 4.1060 | 4.1014 | -0.0046 | -0.0101 |
| 15 | 4.1333 | 4.1925 | -0.0592 | +0.0117 |
| 16 | 4.1339 | 3.9390 | +0.1950 | +0.0049 |
| 17 | 4.0831 | 3.8362 | +0.2469 | +0.0039 |
| 18 | 3.9299 | 3.9556 | +0.0257 | -0.0093 |
| 19 | 3.8968 | 4.1471 | -0.2504 | +0.0162 |
| 20 | 4.1115 | 3.9594 | +0.1521 | +0.0059 |
| 21 | 3.4103 | 4.0704 | -0.6601 | +0.0196 |
| 22 | 3.9798 | 3.4385 | -0.5414 | -0.0192 |
| 23 | 3.9329 | 3.3900 | +0.5429 | +0.0008 |
| 24 | 3.9843 | 3.3662 | +0.6180 | +0.0006 |
| 25 | 3.4363 | 3.9369 | -0.5007 | +0.0189 |
| 26 | 3.9798 | 3.8796 | +0.1001 | +0.0072 |
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