Initial VIPR
3.5000
Registry seed
Current VIPR
3.4778
After latest rated game
Net Movement
-0.0222
Current minus initial
Record
9-7
56% win rate · 16 rated games
Storyline
Karen Kellam entered VIPR with an initial registry rating of 3.5000. Across 16 rated doubles games, the player went 9-7 and moved -0.0222, finishing at 3.4778.
Why It Moved
AI-generated explanation: The record was positive, but the rating dipped because the 9 wins added +0.0586 while the 7 loss(es) gave back -0.0808. The biggest single-game impact was -0.0181 against Christine Ressler as partner and Renae Kray / Rosa Kopja as opponents. In game #16 on 2026-10-29, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.4543 vs opponent team 3.0583.
Partner Chemistry
Partnership patterns are starting to emerge.
Karen's most common partner signals so far: Debbie Fischer (2-1, 67%), Barbara J Kennedy (2-0, 100%), Rosa Kopja (2-0, 100%), Karen Mercer (1-1, 50%). 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 6 times - record: 5-1. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-01 | 0-4 | 3.5000 | 3.4589 | -0.0411 |
| 2026-10-15 | 4-0 | 3.4589 | 3.4831 | +0.0242 |
| 2026-10-22 | 3-1 | 3.4831 | 3.4891 | +0.0060 |
| 2026-10-29 | 2-2 | 3.4891 | 3.4778 | -0.0113 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Loss | 7-11 | Sandy Zutter | Diane McCarthy / Sharon McFarland | 3.5000 | -0.0096 | 3.4904 |
| 2 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Loss | 1-11 | Judy Arlington | Sharon McFarland / Sandy Zutter | 3.4904 | -0.0066 | 3.4838 |
| 3 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Loss | 6-11 | Sharon McFarland | Diane McCarthy / Judy Arlington | 3.4838 | -0.0123 | 3.4715 |
| 4 | 2026-10-01 Thursday Ladies Ladder League - Fall 2026 |
Loss | 7-11 | Diane McCarthy | Sandy Zutter / Judy Arlington | 3.4715 | -0.0126 | 3.4589 |
| 5 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-8 | Jamie Marshall | Debbie Fischer / Karen Mercer | 3.4589 | +0.0071 | 3.4660 |
| 6 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-8 | Barbara J Kennedy | Debbie Fischer / Jamie Marshall | 3.4660 | +0.0040 | 3.4700 |
| 7 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-6 | Karen Mercer | Barbara J Kennedy / Jamie Marshall | 3.4700 | +0.0086 | 3.4786 |
| 8 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-9 | Debbie Fischer | Barbara J Kennedy / Karen Mercer | 3.4786 | +0.0045 | 3.4831 |
| 9 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Loss | 2-11 | Karen Mercer | Barbara J Kennedy / Debbie Fischer | 3.4831 | -0.0083 | 3.4748 |
| 10 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-5 | Rosa Kopja | Debbie Fischer / Karen Mercer | 3.4748 | +0.0064 | 3.4812 |
| 11 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-4 | Debbie Fischer | Barbara J Kennedy / Rosa Kopja | 3.4812 | +0.0052 | 3.4864 |
| 12 | 2026-10-22 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-7 | Barbara J Kennedy | Karen Mercer / Rosa Kopja | 3.4864 | +0.0027 | 3.4891 |
| 13 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-5 | Renae Kray | Christine Ressler / Debbie Fischer | 3.4891 | +0.0116 | 3.5007 |
| 14 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-9 | Rosa Kopja | Debbie Fischer / Renae Kray | 3.5007 | +0.0085 | 3.5092 |
| 15 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Loss | 7-11 | Debbie Fischer | Christine Ressler / Rosa Kopja | 3.5092 | -0.0133 | 3.4959 |
| 16 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Loss | 5-11 | Christine Ressler | Renae Kray / Rosa Kopja | 3.4959 | -0.0181 | 3.4778 |
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 | 3.5116 | 3.5247 | +0.0131 | -0.0096 |
| 2 | 3.3963 | 3.5212 | +0.1249 | -0.0066 |
| 3 | 3.4960 | 3.4163 | -0.0797 | -0.0123 |
| 4 | 3.5055 | 3.4138 | -0.0917 | -0.0126 |
| 5 | 3.1343 | 3.0317 | +0.1026 | +0.0071 |
| 6 | 3.2916 | 3.0522 | +0.2394 | +0.0040 |
| 7 | 3.1150 | 3.0650 | +0.0500 | +0.0086 |
| 8 | 3.2588 | 3.0437 | +0.2151 | +0.0045 |
| 9 | 3.1218 | 3.1807 | +0.0588 | -0.0083 |
| 10 | 3.1551 | 3.0243 | +0.1308 | +0.0064 |
| 11 | 3.2641 | 3.0820 | +0.1821 | +0.0052 |
| 12 | 3.2935 | 2.9724 | +0.3211 | +0.0027 |
| 13 | 3.2033 | 3.2600 | -0.0568 | +0.0116 |
| 14 | 3.1681 | 3.1168 | +0.0514 | +0.0085 |
| 15 | 3.2683 | 3.1508 | -0.1175 | -0.0133 |
| 16 | 3.4543 | 3.0583 | -0.3959 | -0.0181 |
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 +0.0131 -> computed delta -0.0096; 3.5000 -0.0096 = 3.4904