Initial VIPR
3.0000
Registry seed
Current VIPR
2.9445
After latest rated game
Net Movement
-0.0555
Current minus initial
Record
1-7
12% win rate · 8 rated games
Storyline
Jamie Marshall entered VIPR with an initial registry rating of 3.0000. Across 8 rated doubles games, the player went 1-7 and moved -0.0555, finishing at 2.9445.
Why It Moved
AI-generated explanation: The 1-7 record produced +0.0071 from wins and -0.0626 from losses, for a net move of -0.0555. The biggest single-game impact was -0.0138 against Karen Mercer as partner and Elena Gordon / Joy McCormick as opponents. In game #5 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.
Jamie's most common partner signals so far: Karen Mercer (0-2, 0%), Karen Kellam (1-0, 100%), Barbara J Kennedy (0-1, 0%), Debbie Fischer (0-1, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Streaks & Rivalries
Rivalry
Jamie has faced Karen Mercer 4 times - record: 1-3. A tough matchup so far.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-15 | 1-3 | 3.0000 | 2.9897 | -0.0103 |
| 2026-10-29 | 0-4 | 2.9897 | 2.9445 | -0.0452 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Loss | 5-11 | Karen Mercer | Barbara J Kennedy / Debbie Fischer | 3.0000 | -0.0048 | 2.9952 |
| 2 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Win | 11-8 | Karen Kellam | Debbie Fischer / Karen Mercer | 2.9952 | +0.0071 | 3.0023 |
| 3 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Loss | 8-11 | Debbie Fischer | Barbara J Kennedy / Karen Kellam | 3.0023 | -0.0040 | 2.9983 |
| 4 | 2026-10-15 Thursday Ladies Ladder League - Fall 2026 |
Loss | 6-11 | Barbara J Kennedy | Karen Mercer / Karen Kellam | 2.9983 | -0.0086 | 2.9897 |
| 5 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Loss | 8-11 | Karen Mercer | Elena Gordon / Joy McCormick | 2.9897 | -0.0138 | 2.9759 |
| 6 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Loss | 3-11 | Margaret Adrian | Joy McCormick / Karen Mercer | 2.9759 | -0.0136 | 2.9623 |
| 7 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Loss | 7-11 | Joy McCormick | Elena Gordon / Margaret Adrian | 2.9623 | -0.0073 | 2.9550 |
| 8 | 2026-10-29 Thursday Ladies Ladder League - Fall 2026 |
Loss | 8-11 | Elena Gordon | Karen Mercer / Margaret Adrian | 2.9550 | -0.0105 | 2.9445 |
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 | 2.9824 | 3.1832 | +0.2009 | -0.0048 |
| 2 | 3.1343 | 3.0317 | +0.1026 | +0.0071 |
| 3 | 3.0522 | 3.2916 | +0.2394 | -0.0040 |
| 4 | 3.0650 | 3.1150 | +0.0500 | -0.0086 |
| 5 | 2.9553 | 2.8158 | -0.1395 | -0.0138 |
| 6 | 2.9536 | 2.8212 | -0.1324 | -0.0136 |
| 7 | 2.8413 | 2.9377 | +0.0964 | -0.0073 |
| 8 | 2.9572 | 2.9385 | -0.0187 | -0.0105 |
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 +0.2009 -> computed delta -0.0048; 3.0000 -0.0048 = 2.9952