Initial VIPR
4.1820
Registry seed
Current VIPR
4.1800
After latest rated game
Net Movement
-0.0020
Current minus initial
Record
4-4
50% win rate · 8 rated games
Storyline
Jason Johnson entered VIPR with an initial registry rating of 4.1820. Across 8 rated doubles games, the player went 4-4 and moved -0.0020, finishing at 4.1800.
Why It Moved
AI-generated explanation: The 4-4 record produced +0.0434 from wins and -0.0454 from losses, for a net move of -0.0020. The biggest single-game impact was +0.0143 against Patrick Lee as partner and Sal Aparo / Jim Keating as opponents. In game #2 on 2026-07-09, the player's team was the lower-rated team, so the win carried a larger gain: player team 4.1395 vs opponent team 4.3004.
Partner Chemistry
Partnership patterns are starting to emerge.
Jason's most common partner signals so far: Bill Shoemaker (1-1, 50%), Jim Keating (1-0, 100%), Patrick Lee (1-0, 100%), Sal Aparo (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
Jason has faced Bill Shoemaker 4 times - record: 2-2. 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 |
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 |
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 |
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