VIPR Rating Audit Trail

Sue Greco

Member ID: TVCPC-P0615   Generated: 2026-10-29 07:46 PM

2.8430 -> 2.8224
Net -0.0206   Record 1-3   Win Rate 25%   Games 4
Initial VIPR
2.8430
Registry seed
Current VIPR
2.8224
After latest rated game
Net Movement
-0.0206
Current minus initial
Record
1-3
25% win rate · 4 rated games

Storyline

Sue Greco entered VIPR with an initial registry rating of 2.8430. Across 4 rated doubles games, the player went 1-3 and moved -0.0206, finishing at 2.8224.

Why It Moved

AI-generated explanation: The 1-3 record produced +0.0084 from wins and -0.0290 from losses, for a net move of -0.0206. The biggest single-game impact was -0.0106 against Darleen Obrien as partner and Debbie Chaffee / Beth Arms as opponents. In game #1 on 2026-10-01, the two teams were nearly even by pre-game team VIPR: player team 2.8247 vs opponent team 2.8023.

Partner Chemistry

Partnership patterns are starting to emerge.

Sue's most common partner signals so far: Ann Thiel (1-0, 100%), Beth Arms (0-1, 0%), Darleen Obrien (0-1, 0%), Debbie Chaffee (0-1, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.

Streaks & Rivalries
Streak

Sue is currently on a 2-game losing streak in rated VIPR games.

Session Summary

DateW-LStartEndNet
2026-10-01 1-3 2.8430 2.8224 -0.0206

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-10-01
Thursday Ladies Ladder League - Fall 2026
Loss 6-11 Darleen Obrien Debbie Chaffee / Beth Arms 2.8430 -0.0106 2.8324
2 2026-10-01
Thursday Ladies Ladder League - Fall 2026
Win 11-3 Ann Thiel Beth Arms / Darleen Obrien 2.8324 +0.0084 2.8408
3 2026-10-01
Thursday Ladies Ladder League - Fall 2026
Loss 8-11 Beth Arms Debbie Chaffee / Ann Thiel 2.8408 -0.0097 2.8311
4 2026-10-01
Thursday Ladies Ladder League - Fall 2026
Loss 9-11 Debbie Chaffee Darleen Obrien / Ann Thiel 2.8311 -0.0087 2.8224

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 2.8247 2.8023 -0.0223 -0.0106
2 2.8775 2.8214 +0.0562 +0.0084
3 2.8430 2.8533 +0.0103 -0.0097
4 2.8121 2.8588 +0.0467 -0.0087

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 -0.0223 -> computed delta -0.0106; 2.8430 -0.0106 = 2.8324