VIPR Rating Audit Trail

Barbara Giometti

Member ID: TVCPC-P0455   Generated: 2026-07-23 05:16 PM

2.1430 -> 2.1576
Net +0.0146   Record 8-8   Win Rate 50%   Games 16
Initial VIPR
2.1430
Registry seed
Current VIPR
2.1576
After latest rated game
Net Movement
+0.0146
Current minus initial
Record
8-8
50% win rate · 16 rated games

Storyline

Barbara Giometti entered VIPR with an initial registry rating of 2.1430. Across 16 rated doubles games, the player went 8-8 and moved +0.0146, finishing at 2.1576.

Why It Moved

AI-generated explanation: The 8-8 record produced +0.0751 from wins and -0.0605 from losses, for a net move of +0.0146. The biggest single-game impact was -0.0179 against Deborah Austin as partner and Amy Fortier / Pamela Uriarte as opponents. In game #13 on 2026-07-23, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 2.3772 vs opponent team 2.0028.

Partner Chemistry

Partnership patterns are starting to emerge.

Barbara's most common partner signals so far: Kelly Gallagher (1-1, 50%), Marie Shuey (1-1, 50%), Pamela Uriarte (0-2, 0%), Christine Martin (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

Barbara has faced Marie Shuey 5 times - record: 3-2. A close matchup worth watching.

Session Summary

DateW-LStartEndNet
2026-07-02 3-1 2.1430 2.1583 +0.0153
2026-07-09 3-1 2.1583 2.1921 +0.0338
2026-07-16 2-2 2.1921 2.1950 +0.0029
2026-07-23 0-4 2.1950 2.1576 -0.0374

Game-By-Game Rating Trail

#DateResultScorePartnerOpponentsBeforeChangeAfter
1 2026-07-02 Win 11-5 Christine Martin Peggy Salazar / Helen Burns 2.1430 +0.0092 2.1522
2 2026-07-02 Loss 8-11 Cathy Loughridge Christine Martin / Peggy Salazar 2.1522 -0.0097 2.1425
3 2026-07-02 Win 11-2 Peggy Salazar Helen Burns / Cathy Loughridge 2.1425 +0.0082 2.1507
4 2026-07-02 Win 11-10 Helen Burns Christine Martin / Cathy Loughridge 2.1507 +0.0076 2.1583
5 2026-07-09 Loss 9-11 Kelly Gallagher Cindy Halcomb / Marie Shuey 2.1583 -0.0051 2.1532
6 2026-07-09 Win 11-3 Marie Shuey Cindy Halcomb / Kelly Gallagher 2.1532 +0.0131 2.1663
7 2026-07-09 Win 11-9 Cindy Halcomb Marie Shuey / Kelly Gallagher 2.1663 +0.0109 2.1772
8 2026-07-09 Win 11-6 Kelly Gallagher Cindy Halcomb / Marie Shuey 2.1772 +0.0149 2.1921
9 2026-07-16 Loss 6-11 Pamela Uriarte Joy McCormick / Marie Shuey 2.1921 -0.0025 2.1896
10 2026-07-16 Win 11-5 Lynn Ratcliff Marie Shuey / Pamela Uriarte 2.1896 +0.0064 2.1960
11 2026-07-16 Loss 5-11 Marie Shuey Joy McCormick / Lynn Ratcliff 2.1960 -0.0058 2.1902
12 2026-07-16 Win 11-0 Joy McCormick Pamela Uriarte / Lynn Ratcliff 2.1902 +0.0048 2.1950
13 2026-07-23 Loss 9-11 Deborah Austin Amy Fortier / Pamela Uriarte 2.1950 -0.0179 2.1771
14 2026-07-23 Loss 6-11 Pamela Uriarte Amy Fortier / Janet Krasinski 2.1771 -0.0083 2.1688
15 2026-07-23 Loss 5-11 Amy Fortier Deborah Austin / Janet Krasinski 2.1688 -0.0016 2.1672
16 2026-07-23 Loss 10-11 Janet Krasinski Deborah Austin / Pamela Uriarte 2.1672 -0.0096 2.1576

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 2.0898 2.0611 +0.0287 +0.0092
2 2.0398 2.0502 +0.0103 -0.0097
3 2.0744 2.0111 +0.0633 +0.0082
4 2.0948 2.0099 +0.0849 +0.0076
5 2.1915 2.3766 +0.1851 -0.0051
6 2.2114 2.3235 -0.1121 +0.0131
7 2.2512 2.2836 -0.0324 +0.0109
8 2.1960 2.3826 -0.1866 +0.0149
9 2.0580 2.3931 +0.3351 -0.0025
10 2.2296 2.0997 +0.1300 +0.0064
11 2.2364 2.3904 +0.1540 -0.0058
12 2.2947 2.0947 +0.2000 +0.0048
13 2.3772 2.0028 -0.3744 -0.0179
14 2.0666 2.1264 +0.0598 -0.0083
15 2.0732 2.4971 +0.4239 -0.0016
16 2.2338 2.2490 +0.0152 -0.0096

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 +0.0287 -> computed delta +0.0092; 2.1430 +0.0092 = 2.1522