Initial VIPR
4.2740
Registry seed
Current VIPR
4.2728
After latest rated game
Net Movement
-0.0012
Current minus initial
Record
8-6
57% win rate · 14 rated games
Storyline
Bill Shoemaker entered VIPR with an initial registry rating of 4.2740. Across 14 rated doubles games, the player went 8-6 and moved -0.0012, finishing at 4.2728.
Why It Moved
AI-generated explanation: The record was positive, but the rating dipped because the 8 wins added +0.0736 while the 6 loss(es) gave back -0.0748. The biggest single-game impact was -0.0148 against Jim Keating as partner and Mark Burkowski / Craig Narod as opponents. In game #13 on 2026-07-23, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 4.2779 vs opponent team 4.0970.
Partner Chemistry
Partnership patterns are starting to emerge.
Bill's most common partner signals so far: Jim Keating (1-2, 33%), Jason Johnson (1-1, 50%), Jerry Linklater (1-0, 100%), Jim Suminski (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
Bill has faced Jim Keating 4 times - record: 3-1. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 4-0 | 4.2740 | 4.3115 | +0.0375 |
| 2026-07-09 | 1-3 | 4.3115 | 4.2856 | -0.0259 |
| 2026-07-16 | 3-1 | 4.2856 | 4.2998 | +0.0142 |
| 2026-07-23 | 0-2 | 4.2998 | 4.2728 | -0.0270 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Win | 11-10 | Scott Atkin | Jim Suminski / Jim Keating | 4.2740 | +0.0121 | 4.2861 |
| 2 | 2026-07-02 | Win | 11-5 | Jim Keating | Scott Atkin / Mark Burkowski | 4.2861 | +0.0064 | 4.2925 |
| 3 | 2026-07-02 | Win | 11-6 | Mark Burkowski | Jim Suminski / Scott Atkin | 4.2925 | +0.0122 | 4.3047 |
| 4 | 2026-07-02 | Win | 11-8 | Jim Suminski | Jim Keating / Mark Burkowski | 4.3047 | +0.0068 | 4.3115 |
| 5 | 2026-07-09 | Loss | 8-11 | Jim Keating | Patrick Lee / Sal Aparo | 4.3115 | -0.0136 | 4.2979 |
| 6 | 2026-07-09 | Loss | 5-11 | Sal Aparo | Jim Keating / Jason Johnson | 4.2979 | -0.0127 | 4.2852 |
| 7 | 2026-07-09 | Win | 11-8 | Jason Johnson | Patrick Lee / Jim Keating | 4.2852 | +0.0084 | 4.2936 |
| 8 | 2026-07-09 | Loss | 8-11 | Patrick Lee | Sal Aparo / Jason Johnson | 4.2936 | -0.0080 | 4.2856 |
| 9 | 2026-07-16 | Win | 11-4 | Patrick Wilson | Jerry Linklater / Jason Johnson | 4.2856 | +0.0126 | 4.2982 |
| 10 | 2026-07-16 | Win | 11-6 | Richard Whittington | Jason Johnson / Patrick Wilson | 4.2982 | +0.0106 | 4.3088 |
| 11 | 2026-07-16 | Loss | 2-11 | Jason Johnson | Jerry Linklater / Richard Whittington | 4.3088 | -0.0135 | 4.2953 |
| 12 | 2026-07-16 | Win | 11-4 | Jerry Linklater | Patrick Wilson / Richard Whittington | 4.2953 | +0.0045 | 4.2998 |
| 13 | 2026-07-23 | Loss | 10-11 | Jim Keating | Mark Burkowski / Craig Narod | 4.2998 | -0.0148 | 4.2850 |
| 14 | 2026-07-23 | Loss | 5-11 | Craig Narod | Mark Burkowski / Daren Haskell | 4.2850 | -0.0122 | 4.2728 |
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 | 4.2453 | 4.3191 | -0.0738 | +0.0121 |
| 2 | 4.2917 | 4.1610 | +0.1307 | +0.0064 |
| 3 | 4.1795 | 4.2557 | -0.0762 | +0.0122 |
| 4 | 4.3069 | 4.1899 | +0.1170 | +0.0068 |
| 5 | 4.2979 | 4.1679 | -0.1300 | -0.0136 |
| 6 | 4.3089 | 4.2110 | -0.0980 | -0.0127 |
| 7 | 4.2319 | 4.1742 | +0.0576 | +0.0084 |
| 8 | 4.1733 | 4.2445 | +0.0711 | -0.0080 |
| 9 | 4.1445 | 4.2388 | -0.0943 | +0.0126 |
| 10 | 4.1119 | 4.1315 | -0.0196 | +0.0106 |
| 11 | 4.2342 | 4.1070 | -0.1271 | -0.0135 |
| 12 | 4.2782 | 4.0651 | +0.2132 | +0.0045 |
| 13 | 4.2779 | 4.0970 | -0.1809 | -0.0148 |
| 14 | 4.1477 | 4.0712 | -0.0765 | -0.0122 |
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 -0.0738 -> computed delta +0.0121; 4.2740 +0.0121 = 4.2861