VIPR Rating Audit Trail

Marcia Adelman

Member ID: TVCPC-P0362   Generated: 2026-09-04 12:10 PM

2.4300 -> 2.4726
Net +0.0426   Record 9-7   Win Rate 56%   Games 16
Initial VIPR
2.4300
Registry seed
Current VIPR
2.4726
After latest rated game
Net Movement
+0.0426
Current minus initial
Record
9-7
56% win rate · 16 rated games

Storyline

Marcia Adelman entered VIPR with an initial registry rating of 2.4300. Across 16 rated doubles games, the player went 9-7 and moved +0.0426, finishing at 2.4726.

Why It Moved

AI-generated explanation: The 9-7 record produced +0.1075 from wins and -0.0649 from losses, for a net move of +0.0426. The biggest single-game impact was +0.0150 against Missi Horton as partner and Jackie Huckins / Deborah Austin as opponents. In game #15 on 2026-09-03, the player's team was the lower-rated team, so the win carried a larger gain: player team 2.4454 vs opponent team 2.6375.

Partner Chemistry

Partnership patterns are starting to emerge.

Marcia's most common partner signals so far: Coni Lentz (2-1, 67%), Janet Krasinski (1-2, 33%), Deborah Austin (0-3, 0%), Marjorie Fassnacht (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

Marcia has faced Coni Lentz 8 times - record: 4-4. A close matchup worth watching.

Session Summary

DateW-LStartEndNet
2026-07-16 2-2 2.4300 2.4363 +0.0063
2026-07-23 2-2 2.4363 2.4405 +0.0042
2026-08-06 2-2 2.4405 2.4470 +0.0065
2026-09-03 3-1 2.4470 2.4726 +0.0256

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-07-16 Loss 9-11 Deborah Austin Cheryl Prochilo / Cynthia Speiran 2.4300 -0.0099 2.4201
2 2026-07-16 Loss 8-11 Janet Krasinski Cynthia Speiran / Deborah Austin 2.4201 -0.0051 2.4150
3 2026-07-16 Win 11-7 Cynthia Speiran Cheryl Prochilo / Janet Krasinski 2.4150 +0.0112 2.4262
4 2026-07-16 Win 11-3 Cheryl Prochilo Deborah Austin / Janet Krasinski 2.4262 +0.0101 2.4363
5 2026-07-23 Loss 9-11 Marjorie Fassnacht Coni Lentz / Kim Held 2.4363 -0.0086 2.4277
6 2026-07-23 Win 11-3 Kim Held Coni Lentz / Marjorie Fassnacht 2.4277 +0.0107 2.4384
7 2026-07-23 Loss 0-11 Coni Lentz Kim Held / Marjorie Fassnacht 2.4384 -0.0095 2.4289
8 2026-07-23 Win 11-10 Marjorie Fassnacht Coni Lentz / Kim Held 2.4289 +0.0116 2.4405
9 2026-08-06 Win 11-8 Janet Krasinski Deborah Austin / Coni Lentz 2.4405 +0.0144 2.4549
10 2026-08-06 Loss 8-11 Deborah Austin Coni Lentz / Janet Krasinski 2.4549 -0.0137 2.4412
11 2026-08-06 Win 11-6 Coni Lentz Deborah Austin / Janet Krasinski 2.4412 +0.0118 2.4530
12 2026-08-06 Loss 4-11 Janet Krasinski Deborah Austin / Coni Lentz 2.4530 -0.0060 2.4470
13 2026-09-03 Loss 6-11 Deborah Austin Coni Lentz / Missi Horton 2.4470 -0.0121 2.4349
14 2026-09-03 Win 11-10 Jackie Huckins Coni Lentz / Deborah Austin 2.4349 +0.0116 2.4465
15 2026-09-03 Win 11-10 Missi Horton Jackie Huckins / Deborah Austin 2.4465 +0.0150 2.4615
16 2026-09-03 Win 11-2 Coni Lentz Jackie Huckins / Missi Horton 2.4615 +0.0111 2.4726

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 DiffComputed Delta
1 2.5453 2.5487 +0.0034 -0.0099
2 2.4025 2.5902 +0.1878 -0.0051
3 2.4415 2.4826 -0.0411 +0.0112
4 2.5047 2.5079 -0.0032 +0.0101
5 2.4473 2.4953 +0.0480 -0.0086
6 2.4515 2.4759 -0.0244 +0.0107
7 2.4545 2.4729 +0.0184 -0.0095
8 2.4392 2.4958 -0.0566 +0.0116
9 2.3979 2.5641 -0.1662 +0.0144
10 2.5487 2.4128 -0.1359 -0.0137
11 2.4499 2.5116 -0.0617 +0.0118
12 2.4131 2.5599 +0.1468 -0.0060
13 2.5210 2.4455 -0.0755 -0.0121
14 2.4880 2.5456 -0.0576 +0.0116
15 2.4454 2.6375 -0.1921 +0.0150
16 2.4658 2.5045 -0.0387 +0.0111

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 +0.0034 -> computed delta -0.0099; 2.4300 -0.0099 = 2.4201