Initial VIPR
3.7410
Registry seed
Current VIPR
3.7781
After latest rated game
Net Movement
+0.0371
Current minus initial
Record
10-6
62% win rate · 16 rated games
Storyline
Kim Christopherson entered VIPR with an initial registry rating of 3.7410. Across 16 rated doubles games, the player went 10-6 and moved +0.0371, finishing at 3.7781.
Why It Moved
AI-generated explanation: The 10-6 record produced +0.0850 from wins and -0.0479 from losses, for a net move of +0.0371. The biggest single-game impact was +0.0153 against Sue Reich as partner and Beth Walker / Diana Sellers as opponents. In game #11 on 2026-10-22, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.7877 vs opponent team 3.9944.
Partner Chemistry
Partnership patterns are starting to emerge.
Kim's most common partner signals so far: Diana Sellers (2-2, 50%), Sue Reich (2-0, 100%), Cindy Hilderbrand (1-0, 100%), Jackie Elliott (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
Kim has faced Diana Sellers 6 times - record: 4-2. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-01 | 3-1 | 3.7410 | 3.7572 | +0.0162 |
| 2026-10-15 | 3-1 | 3.7572 | 3.7622 | +0.0050 |
| 2026-10-22 | 2-2 | 3.7622 | 3.7754 | +0.0132 |
| 2026-10-29 | 2-2 | 3.7754 | 3.7781 | +0.0027 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-10 | Diana Sellers | Tina Stephens / Carolyn Roan | 3.7410 | +0.0045 | 3.7455 |
| 2 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Loss | 6-11 | Carolyn Roan | Tina Stephens / Jolynne Colvin | 3.7455 | -0.0090 | 3.7365 |
| 3 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-8 | Tina Stephens | Diana Sellers / Jolynne Colvin | 3.7365 | +0.0100 | 3.7465 |
| 4 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-9 | Jolynne Colvin | Diana Sellers / Carolyn Roan | 3.7465 | +0.0107 | 3.7572 |
| 5 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-9 | Michele Blanchard | Cindy Demaio / Jackie Elliott | 3.7572 | +0.0017 | 3.7589 |
| 6 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-3 | Cindy Hilderbrand | Michele Blanchard / Cindy Demaio | 3.7589 | +0.0041 | 3.7630 |
| 7 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Loss | 7-11 | Cindy Demaio | Jackie Elliott / Cindy Hilderbrand | 3.7630 | -0.0056 | 3.7574 |
| 8 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-2 | Jackie Elliott | Michele Blanchard / Cindy Hilderbrand | 3.7574 | +0.0048 | 3.7622 |
| 9 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Loss | 5-11 | Diana Sellers | Beth Walker / Sue Reich | 3.7622 | -0.0069 | 3.7553 |
| 10 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Loss | 2-11 | Beth Walker | Sue Reich / Diana Sellers | 3.7553 | -0.0088 | 3.7465 |
| 11 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-10 | Sue Reich | Beth Walker / Diana Sellers | 3.7465 | +0.0153 | 3.7618 |
| 12 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-4 | Diana Sellers | Beth Walker / Sue Reich | 3.7618 | +0.0136 | 3.7754 |
| 13 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-8 | Kelly Armagost | Diana Sellers / Sue Reich | 3.7754 | +0.0126 | 3.7880 |
| 14 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-7 | Sue Reich | Kelly Armagost / Eveline Norman | 3.7880 | +0.0077 | 3.7957 |
| 15 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Loss | 3-11 | Eveline Norman | Diana Sellers / Kelly Armagost | 3.7957 | -0.0042 | 3.7915 |
| 16 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Loss | 9-11 | Diana Sellers | Sue Reich / Eveline Norman | 3.7915 | -0.0134 | 3.7781 |
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 | 3.8151 | 3.5995 | +0.2156 | +0.0045 |
| 2 | 3.6043 | 3.6383 | +0.0340 | -0.0090 |
| 3 | 3.7274 | 3.7280 | -0.0006 | +0.0100 |
| 4 | 3.6446 | 3.6676 | -0.0230 | +0.0107 |
| 5 | 3.6784 | 3.2711 | +0.4073 | +0.0017 |
| 6 | 3.5097 | 3.2742 | +0.2355 | +0.0041 |
| 7 | 3.3119 | 3.4759 | +0.1640 | -0.0056 |
| 8 | 3.6768 | 3.4759 | +0.2009 | +0.0048 |
| 9 | 3.8205 | 3.9318 | +0.1113 | -0.0069 |
| 10 | 3.8548 | 3.8975 | +0.0428 | -0.0088 |
| 11 | 3.7877 | 3.9944 | -0.2066 | +0.0153 |
| 12 | 3.8162 | 3.9484 | -0.1321 | +0.0136 |
| 13 | 3.8134 | 3.9070 | -0.0936 | +0.0126 |
| 14 | 3.8135 | 3.7336 | +0.0799 | +0.0077 |
| 15 | 3.6884 | 3.9206 | +0.2322 | -0.0042 |
| 16 | 3.8368 | 3.7127 | -0.1241 | -0.0134 |
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 +0.2156 -> computed delta +0.0045; 3.7410 +0.0045 = 3.7455