VIPR Rating Audit Trail

Debbie Hellman

Member ID: TVCPC-P0657   Generated: 2026-10-29 07:46 PM

3.2950 -> 3.2845
Net -0.0105   Record 2-4   Win Rate 33%   Games 6
Initial VIPR
3.2950
Registry seed
Current VIPR
3.2845
After latest rated game
Net Movement
-0.0105
Current minus initial
Record
2-4
33% win rate · 6 rated games

Storyline

Debbie Hellman entered VIPR with an initial registry rating of 3.2950. Across 6 rated doubles games, the player went 2-4 and moved -0.0105, finishing at 3.2845.

Why It Moved

AI-generated explanation: The 2-4 record produced +0.0243 from wins and -0.0348 from losses, for a net move of -0.0105. The biggest single-game impact was +0.0171 against John Gralton as partner and Alejandra Bussey / James Peavley as opponents. In game #1 on 2026-10-13, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.2743 vs opponent team 3.5837.

Partner Chemistry

Partnership patterns are starting to emerge.

Debbie's most common partner signals so far: Barb O'Connor (1-1, 50%), Debbie Gassman (0-2, 0%), John Gralton (1-0, 100%), Bruce Ashley (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

Debbie has faced Alejandra Bussey 3 times - record: 1-2. A close matchup worth watching.

Session Summary

DateW-LStartEndNet
2026-10-13 1-2 3.2950 3.2985 +0.0035
2026-10-20 1-2 3.2985 3.2845 -0.0140

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-10-13
Santiago Club - Team 3 vs Team 4
Win 21-18 John Gralton Alejandra Bussey / James Peavley 3.2950 +0.0171 3.3121
2 2026-10-13
Santiago Club - Team 3 vs Team 4
Loss 12-21 Barb O'Connor Erin DeFrates / Alejandra Bussey 3.3121 -0.0053 3.3068
3 2026-10-13
Santiago Club - Team 3 vs Team 4
Loss 20-22 Debbie Gassman Alejandra Bussey / Debra Vena 3.3068 -0.0083 3.2985
4 2026-10-20
Santiago Club - Team 4 vs Team 2
Loss 14-21 Debbie Gassman Kirstin Burri / Ally McHugh 3.2985 -0.0081 3.2904
5 2026-10-20
Santiago Club - Team 4 vs Team 2
Win 21-17 Barb O'Connor Cookie Sciacca / Kirstin Burri 3.2904 +0.0072 3.2976
6 2026-10-20
Santiago Club - Team 4 vs Team 2
Loss 19-21 Bruce Ashley Kirstin Burri / Phil Sciacca 3.2976 -0.0131 3.2845

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 3.2743 3.5837 -0.3093 +0.0171
2 3.3973 3.5751 +0.1778 -0.0053
3 3.2681 3.3280 +0.0599 -0.0083
4 3.2598 3.3266 +0.0668 -0.0081
5 3.3881 3.2900 +0.0981 +0.0072
6 3.4093 3.2966 -0.1127 -0.0131

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 -0.3093 -> computed delta +0.0171; 3.2950 +0.0171 = 3.3121