Initial VIPR
4.0820
Registry seed
Current VIPR
4.0715
After latest rated game
Net Movement
-0.0105
Current minus initial
Record
5-3
62% win rate · 8 rated games
Storyline
Mary Seifert entered VIPR with an initial registry rating of 4.0820. Across 8 rated doubles games, the player went 5-3 and moved -0.0105, finishing at 4.0715.
Why It Moved
AI-generated explanation: The record was positive, but the rating dipped because the 5 wins added +0.0260 while the 3 loss(es) gave back -0.0365. The biggest single-game impact was -0.0181 against Douglas Starn as partner and Ellen Huber / Mike Blackston as opponents. In game #2 on 2026-10-13, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 3.9632 vs opponent team 3.5759.
Partner Chemistry
Partnership patterns are starting to emerge.
Mary's most common partner signals so far: Greg Dodge (2-0, 100%), Sandy Zutter (1-1, 50%), Douglas Starn (0-2, 0%), Paul Randour (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
Mary has faced Ellen Huber 4 times - record: 3-1. Clear ownership of the matchup.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-13 | 3-1 | 4.0820 | 4.0735 | -0.0085 |
| 2026-10-20 | 2-2 | 4.0735 | 4.0715 | -0.0020 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Win | 21-12 | Sandy Zutter | Ellen Huber / Cookie Sciacca | 4.0820 | +0.0017 | 4.0837 |
| 2 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Loss | 18-21 | Douglas Starn | Ellen Huber / Mike Blackston | 4.0837 | -0.0181 | 4.0656 |
| 3 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Win | 25-24 | Greg Dodge | Ellen Huber / Bob Humphrey | 4.0656 | +0.0017 | 4.0673 |
| 4 | 2026-10-13 Santiago Club - Team 1 vs Team 2 |
Win | 21-12 | Tad Leffelman | Ellen Huber / David Koleda | 4.0673 | +0.0062 | 4.0735 |
| 5 | 2026-10-20 Santiago Club - Team 3 vs Team 1 |
Loss | 20-22 | Sandy Zutter | Sue Dahl / Erin DeFrates | 4.0735 | -0.0083 | 4.0652 |
| 6 | 2026-10-20 Santiago Club - Team 3 vs Team 1 |
Win | 21-15 | Greg Dodge | Sue Dahl / Doug Kellogg | 4.0652 | +0.0089 | 4.0741 |
| 7 | 2026-10-20 Santiago Club - Team 3 vs Team 1 |
Win | 21-14 | Paul Randour | Sue Dahl / Gene Konzen | 4.0741 | +0.0075 | 4.0816 |
| 8 | 2026-10-20 Santiago Club - Team 3 vs Team 1 |
Loss | 12-21 | Douglas Starn | Sue Dahl / Tony Birchall | 4.0816 | -0.0101 | 4.0715 |
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 | 3.7127 | 3.3001 | +0.4126 | +0.0017 |
| 2 | 3.9632 | 3.5759 | -0.3873 | -0.0181 |
| 3 | 4.0754 | 3.6651 | +0.4103 | +0.0017 |
| 4 | 3.7534 | 3.6136 | +0.1398 | +0.0062 |
| 5 | 3.6986 | 3.7593 | +0.0607 | -0.0083 |
| 6 | 4.0744 | 4.0370 | +0.0374 | +0.0089 |
| 7 | 4.0593 | 3.9699 | +0.0894 | +0.0075 |
| 8 | 3.9464 | 3.9429 | -0.0036 | -0.0101 |
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 +0.4126 -> computed delta +0.0017; 4.0820 +0.0017 = 4.0837