Initial VIPR
4.2500
Registry seed
Current VIPR
4.2015
After latest rated game
Net Movement
-0.0485
Current minus initial
Record
7-9
44% win rate · 16 rated games
Storyline
Jon Duke entered VIPR with an initial registry rating of 4.2500. Across 16 rated doubles games, the player went 7-9 and moved -0.0485, finishing at 4.2015.
Why It Moved
AI-generated explanation: The 7-9 record produced +0.0502 from wins and -0.0987 from losses, for a net move of -0.0485. The biggest single-game impact was -0.0163 against Thomas Morris as partner and Chris Donahue / Chip Leccese as opponents. In game #3 on 2026-10-01, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 4.2293 vs opponent team 3.9721.
Partner Chemistry
Partnership patterns are starting to emerge.
Jon's most common partner signals so far: Martin Brady (2-1, 67%), Patrick Wilson (2-0, 100%), Steven Fischer (0-2, 0%), Chris Dicomitis (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
Jon has faced Martin Brady 4 times - record: 3-1. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-01 | 1-3 | 4.2500 | 4.2230 | -0.0270 |
| 2026-10-15 | 2-2 | 4.2230 | 4.2152 | -0.0078 |
| 2026-10-22 | 1-3 | 4.2152 | 4.1869 | -0.0283 |
| 2026-10-29 | 3-1 | 4.1869 | 4.2015 | +0.0146 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Win | 11-2 | Richard Whittington | Thomas Morris / Chris Donahue | 4.2500 | +0.0055 | 4.2555 |
| 2 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Loss | 4-11 | Chip Leccese | Richard Whittington / Thomas Morris | 4.2555 | -0.0093 | 4.2462 |
| 3 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Loss | 7-11 | Thomas Morris | Chris Donahue / Chip Leccese | 4.2462 | -0.0163 | 4.2299 |
| 4 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Loss | 7-11 | Chris Donahue | Richard Whittington / Chip Leccese | 4.2299 | -0.0069 | 4.2230 |
| 5 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Loss | 6-11 | Ken Vallance | Chris Dicomitis / Martin Brady | 4.2230 | -0.0130 | 4.2100 |
| 6 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Win | 11-8 | Chris Dicomitis | Martin Brady / Ken Vallance | 4.2100 | +0.0054 | 4.2154 |
| 7 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Loss | 9-11 | Martin Brady | Chris Dicomitis / Ken Vallance | 4.2154 | -0.0104 | 4.2050 |
| 8 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Win | 11-8 | Martin Brady | Chris Dicomitis / Ken Vallance | 4.2050 | +0.0102 | 4.2152 |
| 9 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Win | 11-10 | Patrick Wilson | Steven Fischer / Richard Edelman | 4.2152 | +0.0068 | 4.2220 |
| 10 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 8-11 | Richard Edelman | Steven Fischer / Jerry Visconti | 4.2220 | -0.0113 | 4.2107 |
| 11 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 5-11 | Steven Fischer | Patrick Wilson / Jerry Visconti | 4.2107 | -0.0121 | 4.1986 |
| 12 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 9-11 | Jerry Visconti | Patrick Wilson / Richard Edelman | 4.1986 | -0.0117 | 4.1869 |
| 13 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Win | 11-2 | Martin Brady | Steven Fischer / Patrick Wilson | 4.1869 | +0.0120 | 4.1989 |
| 14 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Win | 11-10 | Michael Czerwinski | Steven Fischer / Martin Brady | 4.1989 | +0.0038 | 4.2027 |
| 15 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Win | 11-2 | Patrick Wilson | Michael Czerwinski / Martin Brady | 4.2027 | +0.0065 | 4.2092 |
| 16 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Loss | 8-11 | Steven Fischer | Michael Czerwinski / Patrick Wilson | 4.2092 | -0.0077 | 4.2015 |
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 | 4.1738 | 4.0057 | +0.1681 | +0.0055 |
| 2 | 4.1527 | 4.1768 | +0.0241 | -0.0093 |
| 3 | 4.2293 | 3.9721 | -0.2573 | -0.0163 |
| 4 | 4.0226 | 4.1322 | +0.1096 | -0.0069 |
| 5 | 4.0456 | 3.9362 | -0.1094 | -0.0130 |
| 6 | 4.0945 | 3.9226 | +0.1719 | +0.0054 |
| 7 | 3.9965 | 3.9810 | -0.0155 | -0.0104 |
| 8 | 3.9861 | 3.9914 | -0.0053 | +0.0102 |
| 9 | 4.1224 | 4.0078 | +0.1146 | +0.0068 |
| 10 | 4.0534 | 4.0078 | -0.0456 | -0.0113 |
| 11 | 4.1042 | 4.0284 | -0.0759 | -0.0121 |
| 12 | 4.0642 | 4.0062 | -0.0580 | -0.0117 |
| 13 | 3.9976 | 4.0686 | -0.0710 | +0.0120 |
| 14 | 4.2107 | 3.9584 | +0.2523 | +0.0038 |
| 15 | 4.1468 | 4.0199 | +0.1270 | +0.0065 |
| 16 | 4.0798 | 4.1612 | +0.0814 | -0.0077 |
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 +0.1681 -> computed delta +0.0055; 4.2500 +0.0055 = 4.2555