Initial VIPR
3.0460
Registry seed
Current VIPR
3.0859
After latest rated game
Net Movement
+0.0399
Current minus initial
Record
8-4
67% win rate · 12 rated games
Storyline
Jeffrey Buxbaum entered VIPR with an initial registry rating of 3.0460. Across 12 rated doubles games, the player went 8-4 and moved +0.0399, finishing at 3.0859.
Why It Moved
AI-generated explanation: The 8-4 record produced +0.0692 from wins and -0.0293 from losses, for a net move of +0.0399. The biggest single-game impact was +0.0140 against Steven Fleming as partner and David Roman / Gabriel Fontana as opponents. In game #9 on 2026-10-29, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.0977 vs opponent team 3.2455.
Partner Chemistry
Partnership patterns are starting to emerge.
Jeffrey's most common partner signals so far: Mark Hayward (2-0, 100%), TOM WILSON (0-2, 0%), Bob Lepping (1-0, 100%), Gabriel Fontana (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
Jeffrey has faced Bob Lepping 3 times - record: 1-2. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-01 | 2-2 | 3.0460 | 3.0444 | -0.0016 |
| 2026-10-15 | 3-1 | 3.0444 | 3.0540 | +0.0096 |
| 2026-10-29 | 3-1 | 3.0540 | 3.0859 | +0.0319 |
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 | 11-7 | Gregory Kerr | Bob Lepping / TOM WILSON | 3.0460 | +0.0043 | 3.0503 |
| 2 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Win | 11-8 | Bob Lepping | Gregory Kerr / TOM WILSON | 3.0503 | +0.0056 | 3.0559 |
| 3 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Loss | 5-11 | TOM WILSON | Gregory Kerr / Bob Lepping | 3.0559 | -0.0059 | 3.0500 |
| 4 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Loss | 1-11 | TOM WILSON | Gregory Kerr / Bob Lepping | 3.0500 | -0.0056 | 3.0444 |
| 5 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Win | 11-10 | Ray Kopja | Ronnie Halcomb / James Russ | 3.0444 | +0.0065 | 3.0509 |
| 6 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Loss | 3-11 | Gabriel Coss | Ronnie Halcomb / Mark Hayward | 3.0509 | -0.0096 | 3.0413 |
| 7 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Win | 11-8 | James Russ | Ronnie Halcomb / Gabriel Coss | 3.0413 | +0.0071 | 3.0484 |
| 8 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Win | 11-8 | Mark Hayward | Ray Kopja / Gabriel Coss | 3.0484 | +0.0056 | 3.0540 |
| 9 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Win | 11-5 | Steven Fleming | David Roman / Gabriel Fontana | 3.0540 | +0.0140 | 3.0680 |
| 10 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Win | 11-7 | Gabriel Fontana | Steven Fleming / Mark Hayward | 3.0680 | +0.0135 | 3.0815 |
| 11 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Win | 11-5 | Mark Hayward | David Roman / Steven Fleming | 3.0815 | +0.0126 | 3.0941 |
| 12 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Loss | 9-11 | David Roman | Gabriel Fontana / Mark Hayward | 3.0941 | -0.0082 | 3.0859 |
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 | 3.0286 | 2.8039 | +0.2247 | +0.0043 |
| 2 | 2.9841 | 2.8205 | +0.1635 | +0.0056 |
| 3 | 2.8257 | 2.9789 | +0.1531 | -0.0059 |
| 4 | 2.8198 | 2.9848 | +0.1649 | -0.0056 |
| 5 | 3.0334 | 2.9058 | +0.1276 | +0.0065 |
| 6 | 2.9672 | 2.9794 | +0.0122 | -0.0096 |
| 7 | 2.9938 | 2.8905 | +0.1033 | +0.0071 |
| 8 | 3.1163 | 2.9528 | +0.1635 | +0.0056 |
| 9 | 3.0977 | 3.2455 | -0.1478 | +0.0140 |
| 10 | 3.1055 | 3.2336 | -0.1281 | +0.0135 |
| 11 | 3.1394 | 3.2334 | -0.0939 | +0.0126 |
| 12 | 3.1608 | 3.2253 | +0.0646 | -0.0082 |
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 +0.2247 -> computed delta +0.0043; 3.0460 +0.0043 = 3.0503