Initial VIPR
3.6150
Registry seed
Current VIPR
3.5325
After latest rated game
Net Movement
-0.0825
Current minus initial
Record
6-14
30% win rate · 20 rated games
Storyline
Robert McCollough entered VIPR with an initial registry rating of 3.6150. Across 20 rated doubles games, the player went 6-14 and moved -0.0825, finishing at 3.5325.
Why It Moved
AI-generated explanation: The 6-14 record produced +0.0545 from wins and -0.1370 from losses, for a net move of -0.0825. The biggest single-game impact was -0.0170 against Joseph Weber as partner and Robert Nunn / Sunil Sadhwani as opponents. In game #8 on 2026-07-23, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.7639 vs opponent team 3.4631.
Partner Chemistry
Partnership patterns are starting to emerge.
Robert's most common partner signals so far: Kevin Geraty (1-2, 33%), Sunil Sadhwani (1-2, 33%), Mathis Hediger (2-0, 100%), Kenneth Enos (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
Robert has faced Sunil Sadhwani 6 times - record: 1-5. A tough matchup so far.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-16 | 1-3 | 3.6150 | 3.5907 | -0.0243 |
| 2026-07-23 | 1-3 | 3.5907 | 3.5726 | -0.0181 |
| 2026-08-06 | 3-1 | 3.5726 | 3.5842 | +0.0116 |
| 2026-08-27 | 0-4 | 3.5842 | 3.5547 | -0.0295 |
| 2026-09-03 | 1-3 | 3.5547 | 3.5325 | -0.0222 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-16 | Loss | 8-11 | Sunil Sadhwani | Joel Lancaster / Kevin Geraty | 3.6150 | -0.0057 | 3.6093 |
| 2 | 2026-07-16 | Win | 11-1 | Mathis Hediger | Sunil Sadhwani / Joel Lancaster | 3.6093 | +0.0110 | 3.6203 |
| 3 | 2026-07-16 | Loss | 4-11 | Joel Lancaster | Kevin Geraty / Mathis Hediger | 3.6203 | -0.0153 | 3.6050 |
| 4 | 2026-07-16 | Loss | 6-11 | Kevin Geraty | Sunil Sadhwani / Mathis Hediger | 3.6050 | -0.0143 | 3.5907 |
| 5 | 2026-07-23 | Loss | 6-11 | Kevin Geraty | Joseph Weber / Sunil Sadhwani | 3.5907 | -0.0080 | 3.5827 |
| 6 | 2026-07-23 | Loss | 1-11 | Robert Nunn | Joseph Weber / Kevin Geraty | 3.5827 | -0.0054 | 3.5773 |
| 7 | 2026-07-23 | Win | 11-9 | Sunil Sadhwani | Robert Nunn / Kevin Geraty | 3.5773 | +0.0123 | 3.5896 |
| 8 | 2026-07-23 | Loss | 7-11 | Joseph Weber | Robert Nunn / Sunil Sadhwani | 3.5896 | -0.0170 | 3.5726 |
| 9 | 2026-08-06 | Win | 11-3 | Kevin Geraty | Kenneth Enos / John Patton | 3.5726 | +0.0045 | 3.5771 |
| 10 | 2026-08-06 | Loss | 8-11 | John Patton | Kenneth Enos / Ron Hudik | 3.5771 | -0.0080 | 3.5691 |
| 11 | 2026-08-06 | Win | 11-7 | Kenneth Enos | Kevin Geraty / Ron Hudik | 3.5691 | +0.0083 | 3.5774 |
| 12 | 2026-08-06 | Win | 11-7 | Ron Hudik | Kevin Geraty / John Patton | 3.5774 | +0.0068 | 3.5842 |
| 13 | 2026-08-27 | Loss | 3-11 | Mark Wu | Dan Civitarese / Sunil Sadhwani | 3.5842 | -0.0075 | 3.5767 |
| 14 | 2026-08-27 | Loss | 5-11 | Dan Scheer | Dan Civitarese / Mark Wu | 3.5767 | -0.0011 | 3.5756 |
| 15 | 2026-08-27 | Loss | 7-11 | Sunil Sadhwani | Dan Scheer / Mark Wu | 3.5756 | -0.0043 | 3.5713 |
| 16 | 2026-08-27 | Loss | 4-11 | Dan Civitarese | Dan Scheer / Sunil Sadhwani | 3.5713 | -0.0166 | 3.5547 |
| 17 | 2026-09-03 | Loss | 8-11 | Ernest Ferguson | Dennis Berrigan / Mathis Hediger | 3.5547 | -0.0117 | 3.5430 |
| 18 | 2026-09-03 | Win | 11-7 | Mathis Hediger | Ernest Ferguson / Ken Lomando | 3.5430 | +0.0116 | 3.5546 |
| 19 | 2026-09-03 | Loss | 1-11 | Ken Lomando | Dennis Berrigan / Ernest Ferguson | 3.5546 | -0.0106 | 3.5440 |
| 20 | 2026-09-03 | Loss | 4-11 | Dennis Berrigan | Mathis Hediger / Ken Lomando | 3.5440 | -0.0115 | 3.5325 |
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 | 3.4532 | 3.6141 | +0.1609 | -0.0057 |
| 2 | 3.4899 | 3.5241 | -0.0342 | +0.0110 |
| 3 | 3.6805 | 3.4759 | -0.2045 | -0.0153 |
| 4 | 3.5680 | 3.4064 | -0.1617 | -0.0143 |
| 5 | 3.5658 | 3.6361 | +0.0703 | -0.0080 |
| 6 | 3.5606 | 3.7325 | +0.1719 | -0.0054 |
| 7 | 3.4677 | 3.5477 | -0.0801 | +0.0123 |
| 8 | 3.7639 | 3.4631 | -0.3008 | -0.0170 |
| 9 | 3.5499 | 3.3344 | +0.2155 | +0.0045 |
| 10 | 3.3584 | 3.4290 | +0.0706 | -0.0080 |
| 11 | 3.5139 | 3.4533 | +0.0607 | +0.0083 |
| 12 | 3.4541 | 3.3387 | +0.1154 | +0.0068 |
| 13 | 3.6984 | 3.7873 | +0.0888 | -0.0075 |
| 14 | 3.6048 | 4.1048 | +0.5000 | -0.0011 |
| 15 | 3.5329 | 3.7559 | +0.2230 | -0.0043 |
| 16 | 3.8348 | 3.5592 | -0.2756 | -0.0166 |
| 17 | 3.5528 | 3.4942 | -0.0586 | -0.0117 |
| 18 | 3.4960 | 3.5529 | -0.0568 | +0.0116 |
| 19 | 3.5618 | 3.5397 | -0.0221 | -0.0106 |
| 20 | 3.5591 | 3.5061 | -0.0530 | -0.0115 |
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 +0.1609 -> computed delta -0.0057; 3.6150 -0.0057 = 3.6093