Initial VIPR
2.9720
Registry seed
Current VIPR
2.9576
After latest rated game
Net Movement
-0.0144
Current minus initial
Record
6-10
38% win rate · 16 rated games
Storyline
Karen Mercer entered VIPR with an initial registry rating of 2.9720. Across 16 rated doubles games, the player went 6-10 and moved -0.0144, finishing at 2.9576.
Why It Moved
AI-generated explanation: The 6-10 record produced +0.0605 from wins and -0.0749 from losses, for a net move of -0.0144. The biggest single-game impact was -0.0138 against Jamie Marshall as partner and Elena Gordon / Joy McCormick as opponents. In game #13 on 2026-10-29, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 2.9553 vs opponent team 2.8158.
Partner Chemistry
Partnership patterns are starting to emerge.
Karen's most common partner signals so far: Margaret Adrian (2-1, 67%), Karen Kellam (1-1, 50%), Barbara J Kennedy (0-2, 0%), Debbie Fischer (0-2, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Streaks & Rivalries
Rivalry
Karen has faced Debbie Fischer 4 times - record: 0-4. A tough matchup so far.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-01 | 2-2 | 2.9720 | 2.9748 | +0.0028 |
| 2026-10-15 | 1-3 | 2.9748 | 2.9670 | -0.0078 |
| 2026-10-22 | 0-4 | 2.9670 | 2.9406 | -0.0264 |
| 2026-10-29 | 3-1 | 2.9406 | 2.9576 | +0.0170 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-0 | Renae Kray | Kathy Sutyak / Margaret Adrian | 2.9720 | +0.0092 | 2.9812 |
| 2 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Loss | 10-11 | Margaret Adrian | Renae Kray / Kathy Sutyak | 2.9812 | -0.0084 | 2.9728 |
| 3 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Loss | 3-11 | Kathy Sutyak | Renae Kray / Margaret Adrian | 2.9728 | -0.0099 | 2.9629 |
| 4 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-3 | Margaret Adrian | Renae Kray / Kathy Sutyak | 2.9629 | +0.0119 | 2.9748 |
| 5 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Loss | 5-11 | Jamie Marshall | Barbara J Kennedy / Debbie Fischer | 2.9748 | -0.0048 | 2.9700 |
| 6 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Loss | 8-11 | Debbie Fischer | Jamie Marshall / Karen Kellam | 2.9700 | -0.0071 | 2.9629 |
| 7 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-6 | Karen Kellam | Barbara J Kennedy / Jamie Marshall | 2.9629 | +0.0086 | 2.9715 |
| 8 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Loss | 9-11 | Barbara J Kennedy | Debbie Fischer / Karen Kellam | 2.9715 | -0.0045 | 2.9670 |
| 9 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Loss | 2-11 | Karen Kellam | Barbara J Kennedy / Debbie Fischer | 2.9670 | -0.0083 | 2.9587 |
| 10 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Loss | 5-11 | Debbie Fischer | Karen Kellam / Rosa Kopja | 2.9587 | -0.0064 | 2.9523 |
| 11 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Loss | 7-11 | Rosa Kopja | Barbara J Kennedy / Karen Kellam | 2.9523 | -0.0027 | 2.9496 |
| 12 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Loss | 5-11 | Barbara J Kennedy | Debbie Fischer / Rosa Kopja | 2.9496 | -0.0090 | 2.9406 |
| 13 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Loss | 8-11 | Jamie Marshall | Elena Gordon / Joy McCormick | 2.9406 | -0.0138 | 2.9268 |
| 14 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-3 | Joy McCormick | Jamie Marshall / Margaret Adrian | 2.9268 | +0.0136 | 2.9404 |
| 15 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-8 | Margaret Adrian | Elena Gordon / Jamie Marshall | 2.9404 | +0.0105 | 2.9509 |
| 16 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-6 | Elena Gordon | Joy McCormick / Margaret Adrian | 2.9509 | +0.0067 | 2.9576 |
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 | 3.0000 | 2.9713 | +0.0287 | +0.0092 |
| 2 | 2.9592 | 3.0159 | +0.0567 | -0.0084 |
| 3 | 2.9807 | 2.9838 | +0.0031 | -0.0099 |
| 4 | 2.9548 | 3.0203 | -0.0655 | +0.0119 |
| 5 | 2.9824 | 3.1832 | +0.2009 | -0.0048 |
| 6 | 3.0317 | 3.1343 | +0.1026 | -0.0071 |
| 7 | 3.1150 | 3.0650 | +0.0500 | +0.0086 |
| 8 | 3.0437 | 3.2588 | +0.2151 | -0.0045 |
| 9 | 3.1218 | 3.1807 | +0.0588 | -0.0083 |
| 10 | 3.0243 | 3.1551 | +0.1308 | -0.0064 |
| 11 | 2.9724 | 3.2935 | +0.3211 | -0.0027 |
| 12 | 3.0288 | 3.0645 | +0.0357 | -0.0090 |
| 13 | 2.9553 | 2.8158 | -0.1395 | -0.0138 |
| 14 | 2.8212 | 2.9536 | -0.1324 | +0.0136 |
| 15 | 2.9385 | 2.9572 | -0.0187 | +0.0105 |
| 16 | 2.9511 | 2.8320 | +0.1191 | +0.0067 |
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 +0.0287 -> computed delta +0.0092; 2.9720 +0.0092 = 2.9812