Initial VIPR
4.1820
Registry seed
Current VIPR
4.1646
After latest rated game
Net Movement
-0.0174
Current minus initial
Record
8-8
50% win rate · 16 rated games
Storyline
Jason Johnson entered VIPR with an initial registry rating of 4.1820. Across 16 rated doubles games, the player went 8-8 and moved -0.0174, finishing at 4.1646.
Why It Moved
AI-generated explanation: The 8-8 record produced +0.0750 from wins and -0.0924 from losses, for a net move of -0.0174. The biggest single-game impact was -0.0196 against Ken Vallance as partner and Craig Narod / Ramon Jimenez as opponents. In game #15 on 2026-08-27, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 4.0704 vs opponent team 3.4103.
Partner Chemistry
Partnership patterns are starting to emerge.
Jason's most common partner signals so far: Bill Shoemaker (2-1, 67%), Craig Narod (1-1, 50%), Jim Keating (1-1, 50%), Richard Whittington (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
Jason has faced Bill Shoemaker 6 times - record: 2-4. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-09 | 4-0 | 4.1820 | 4.2254 | +0.0434 |
| 2026-07-16 | 0-4 | 4.2254 | 4.1800 | -0.0454 |
| 2026-08-06 | 1-3 | 4.1800 | 4.1585 | -0.0215 |
| 2026-08-27 | 3-1 | 4.1585 | 4.1646 | +0.0061 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-09 | Win | 11-5 | Jim Keating | Sal Aparo / Bill Shoemaker | 4.1820 | +0.0127 | 4.1947 |
| 2 | 2026-07-09 | Win | 11-4 | Patrick Lee | Sal Aparo / Jim Keating | 4.1947 | +0.0143 | 4.2090 |
| 3 | 2026-07-09 | Win | 11-8 | Bill Shoemaker | Patrick Lee / Jim Keating | 4.2090 | +0.0084 | 4.2174 |
| 4 | 2026-07-09 | Win | 11-8 | Sal Aparo | Patrick Lee / Bill Shoemaker | 4.2174 | +0.0080 | 4.2254 |
| 5 | 2026-07-16 | Loss | 4-11 | Jerry Linklater | Bill Shoemaker / Patrick Wilson | 4.2254 | -0.0126 | 4.2128 |
| 6 | 2026-07-16 | Loss | 6-11 | Patrick Wilson | Bill Shoemaker / Richard Whittington | 4.2128 | -0.0106 | 4.2022 |
| 7 | 2026-07-16 | Loss | 2-11 | Bill Shoemaker | Jerry Linklater / Richard Whittington | 4.2022 | -0.0135 | 4.1887 |
| 8 | 2026-07-16 | Loss | 10-11 | Richard Whittington | Jerry Linklater / Patrick Wilson | 4.1887 | -0.0087 | 4.1800 |
| 9 | 2026-08-06 | Loss | 3-11 | Richard Whittington | Jim Keating / Bill Shoemaker | 4.1800 | -0.0056 | 4.1744 |
| 10 | 2026-08-06 | Win | 11-8 | Bill Shoemaker | Richard Whittington / Craig Narod | 4.1744 | +0.0059 | 4.1803 |
| 11 | 2026-08-06 | Loss | 4-11 | Craig Narod | Jim Keating / Richard Whittington | 4.1803 | -0.0101 | 4.1702 |
| 12 | 2026-08-06 | Loss | 5-11 | Jim Keating | Bill Shoemaker / Craig Narod | 4.1702 | -0.0117 | 4.1585 |
| 13 | 2026-08-27 | Win | 11-5 | Craig Narod | Ken Vallance / Martin Brady | 4.1585 | +0.0059 | 4.1644 |
| 14 | 2026-08-27 | Win | 11-6 | Martin Brady | Ken Vallance / Ramon Jimenez | 4.1644 | +0.0006 | 4.1650 |
| 15 | 2026-08-27 | Loss | 6-11 | Ken Vallance | Craig Narod / Ramon Jimenez | 4.1650 | -0.0196 | 4.1454 |
| 16 | 2026-08-27 | Win | 11-2 | Ramon Jimenez | Craig Narod / Martin Brady | 4.1454 | +0.0192 | 4.1646 |
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 | 4.2110 | 4.3089 | -0.0980 | +0.0127 |
| 2 | 4.1395 | 4.3004 | -0.1609 | +0.0143 |
| 3 | 4.2319 | 4.1742 | +0.0576 | +0.0084 |
| 4 | 4.2445 | 4.1733 | +0.0711 | +0.0080 |
| 5 | 4.2388 | 4.1445 | -0.0943 | -0.0126 |
| 6 | 4.1315 | 4.1119 | -0.0196 | -0.0106 |
| 7 | 4.2342 | 4.1070 | -0.1271 | -0.0135 |
| 8 | 4.0927 | 4.1397 | +0.0469 | -0.0087 |
| 9 | 4.0856 | 4.2496 | +0.1641 | -0.0056 |
| 10 | 4.2056 | 4.0549 | +0.1507 | +0.0059 |
| 11 | 4.1060 | 4.1014 | -0.0046 | -0.0101 |
| 12 | 4.1925 | 4.1333 | -0.0592 | -0.0117 |
| 13 | 4.1115 | 3.9594 | +0.1521 | +0.0059 |
| 14 | 3.9937 | 3.3907 | +0.6030 | +0.0006 |
| 15 | 4.0704 | 3.4103 | -0.6601 | -0.0196 |
| 16 | 3.4385 | 3.9798 | -0.5414 | +0.0192 |
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 -0.0980 -> computed delta +0.0127; 4.1820 +0.0127 = 4.1947