Storyline
Brian Wachtel entered VIPR with an initial registry rating of 3.8950. Across 4 rated doubles games, the player went 3-1 and moved +0.0172, finishing at 3.9122.
Why It Moved
AI-generated explanation: The 3-1 record produced +0.0296 from wins and -0.0124 from losses, for a net move of +0.0172. The biggest single-game impact was -0.0124 against Pete Nikolakakis as partner and Michael Marx / Matt Dame as opponents. In game #3 on 2026-07-02, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.8827 vs opponent team 3.7973.
Partnership patterns are starting to emerge.
Brian's most common partner signals so far: Joel Lancaster (1-0, 100%), Matt Dame (1-0, 100%), Michael Marx (1-0, 100%), Pete Nikolakakis (0-1, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Brian is currently on a 1-game winning streak in rated VIPR games.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 3-1 | 3.8950 | 3.9122 | +0.0172 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Win | 11-7 | Joel Lancaster | Pete Nikolakakis / Michael Marx | 3.8950 | +0.0087 | 3.9037 |
| 2 | 2026-07-02 | Win | 11-10 | Matt Dame | Joel Lancaster / Pete Nikolakakis | 3.9037 | +0.0102 | 3.9139 |
| 3 | 2026-07-02 | Loss | 10-11 | Pete Nikolakakis | Michael Marx / Matt Dame | 3.9139 | -0.0124 | 3.9015 |
| 4 | 2026-07-02 | Win | 11-8 | Michael Marx | Joel Lancaster / Matt Dame | 3.9015 | +0.0107 | 3.9122 |
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 | 3.8663 | 3.8202 | +0.0461 | +0.0087 |
| 2 | 3.8550 | 3.8613 | -0.0063 | +0.0102 |
| 3 | 3.8827 | 3.7973 | -0.0854 | -0.0124 |
| 4 | 3.8231 | 3.8474 | -0.0243 | +0.0107 |
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 +0.0461 -> computed delta +0.0087; 3.8950 +0.0087 = 3.9037