Initial VIPR
3.8890
Registry seed
Current VIPR
3.8918
After latest rated game
Net Movement
+0.0028
Current minus initial
Record
4-4
50% win rate · 8 rated games
Storyline
Bob Rich entered VIPR with an initial registry rating of 3.8890. Across 8 rated doubles games, the player went 4-4 and moved +0.0028, finishing at 3.8918.
Why It Moved
AI-generated explanation: The 4-4 record produced +0.0442 from wins and -0.0414 from losses, for a net move of +0.0028. The biggest single-game impact was -0.0122 against George Artrip as partner and Tony Moran / Christopher Burns as opponents. In game #2 on 2026-10-22, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.8871 vs opponent team 3.8092.
Partner Chemistry
Partnership patterns are starting to emerge.
Bob's most common partner signals so far: George Artrip (1-1, 50%), Ken Vallance (1-1, 50%), Dan Cupertino (1-0, 100%), Scott Konkel (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
Bob has faced George Artrip 4 times - record: 2-2. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-22 | 1-3 | 3.8890 | 3.8685 | -0.0205 |
| 2026-10-29 | 3-1 | 3.8685 | 3.8918 | +0.0233 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 8-11 | Tony Moran | Ken Vallance / George Artrip | 3.8890 | -0.0072 | 3.8818 |
| 2 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 7-11 | George Artrip | Tony Moran / Christopher Burns | 3.8818 | -0.0122 | 3.8696 |
| 3 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 5-11 | Christopher Burns | Ken Vallance / Tony Moran | 3.8696 | -0.0120 | 3.8576 |
| 4 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Win | 11-8 | Ken Vallance | George Artrip / Christopher Burns | 3.8576 | +0.0109 | 3.8685 |
| 5 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Win | 11-6 | Dan Cupertino | Ken Vallance / George Artrip | 3.8685 | +0.0103 | 3.8788 |
| 6 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Win | 11-3 | Scott Konkel | Ken Vallance / Dan Cupertino | 3.8788 | +0.0109 | 3.8897 |
| 7 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Win | 11-5 | George Artrip | Scott Konkel / Dan Cupertino | 3.8897 | +0.0121 | 3.9018 |
| 8 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Loss | 9-11 | Ken Vallance | Scott Konkel / George Artrip | 3.9018 | -0.0100 | 3.8918 |
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 | 3.7992 | 3.8997 | +0.1005 | -0.0072 |
| 2 | 3.8871 | 3.8092 | -0.0779 | -0.0122 |
| 3 | 3.8900 | 3.8188 | -0.0712 | -0.0120 |
| 4 | 3.8772 | 3.9082 | -0.0310 | +0.0109 |
| 5 | 3.8891 | 3.8994 | -0.0104 | +0.0103 |
| 6 | 3.9054 | 3.9370 | -0.0316 | +0.0109 |
| 7 | 3.8763 | 3.9490 | -0.0727 | +0.0121 |
| 8 | 3.9078 | 3.9077 | -0.0001 | -0.0100 |
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 +0.1005 -> computed delta -0.0072; 3.8890 -0.0072 = 3.8818