Initial VIPR
3.4620
Registry seed
Current VIPR
3.4430
After latest rated game
Net Movement
-0.0190
Current minus initial
Record
5-11
31% win rate · 16 rated games
Storyline
Sharon McFarland entered VIPR with an initial registry rating of 3.4620. Across 16 rated doubles games, the player went 5-11 and moved -0.0190, finishing at 3.4430.
Why It Moved
AI-generated explanation: The 5-11 record produced +0.0607 from wins and -0.0797 from losses, for a net move of -0.0190. The biggest single-game impact was +0.0173 against Jean Narod as partner and Laura Marchisello / Jolynne Colvin as opponents. In game #15 on 2026-07-23, the player's team was the lower-rated team, so the win carried a larger gain: player team 3.4169 vs opponent team 3.7403.
Partner Chemistry
Partnership patterns are starting to emerge.
Sharon's most common partner signals so far: Jolynne Colvin (2-1, 67%), Erin DeFrates (1-1, 50%), Carolyn Roan (0-2, 0%), Jean Narod (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
Sharon has faced Jolynne Colvin 6 times - record: 2-4. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-07-02 | 0-4 | 3.4620 | 3.4367 | -0.0253 |
| 2026-07-09 | 1-3 | 3.4367 | 3.4221 | -0.0146 |
| 2026-07-16 | 1-3 | 3.4221 | 3.4097 | -0.0124 |
| 2026-07-23 | 3-1 | 3.4097 | 3.4430 | +0.0333 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-02 | Loss | 9-11 | Michele Blanchard | Erin DeFrates / Sandy Zutter | 3.4620 | -0.0068 | 3.4552 |
| 2 | 2026-07-02 | Loss | 7-11 | Sue Reich | Erin DeFrates / Michele Blanchard | 3.4552 | -0.0081 | 3.4471 |
| 3 | 2026-07-02 | Loss | 3-11 | Sandy Zutter | Sue Reich / Michele Blanchard | 3.4471 | -0.0047 | 3.4424 |
| 4 | 2026-07-02 | Loss | 6-11 | Erin DeFrates | Sue Reich / Sandy Zutter | 3.4424 | -0.0057 | 3.4367 |
| 5 | 2026-07-09 | Loss | 4-11 | Christine Ressler | Jolynne Colvin / Sally Musser | 3.4367 | -0.0061 | 3.4306 |
| 6 | 2026-07-09 | Loss | 5-11 | Carolyn Roan | Sally Musser / Christine Ressler | 3.4306 | -0.0079 | 3.4227 |
| 7 | 2026-07-09 | Loss | 10-11 | Sally Musser | Jolynne Colvin / Carolyn Roan | 3.4227 | -0.0093 | 3.4134 |
| 8 | 2026-07-09 | Win | 11-10 | Jolynne Colvin | Christine Ressler / Carolyn Roan | 3.4134 | +0.0087 | 3.4221 |
| 9 | 2026-07-16 | Loss | 6-11 | Carolyn Roan | Jolynne Colvin / Nancy Pierce | 3.4221 | -0.0042 | 3.4179 |
| 10 | 2026-07-16 | Loss | 8-11 | Stephanie Chen | Nancy Pierce / Carolyn Roan | 3.4179 | -0.0081 | 3.4098 |
| 11 | 2026-07-16 | Loss | 6-11 | Nancy Pierce | Jolynne Colvin / Stephanie Chen | 3.4098 | -0.0090 | 3.4008 |
| 12 | 2026-07-16 | Win | 11-4 | Jolynne Colvin | Carolyn Roan / Stephanie Chen | 3.4008 | +0.0089 | 3.4097 |
| 13 | 2026-07-23 | Loss | 4-11 | Jolynne Colvin | Erin DeFrates / Jean Narod | 3.4097 | -0.0098 | 3.3999 |
| 14 | 2026-07-23 | Win | 11-5 | Laura Marchisello | Erin DeFrates / Jolynne Colvin | 3.3999 | +0.0141 | 3.4140 |
| 15 | 2026-07-23 | Win | 11-9 | Jean Narod | Laura Marchisello / Jolynne Colvin | 3.4140 | +0.0173 | 3.4313 |
| 16 | 2026-07-23 | Win | 11-5 | Erin DeFrates | Laura Marchisello / Jean Narod | 3.4313 | +0.0117 | 3.4430 |
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 | 3.5126 | 3.6286 | +0.1160 | -0.0068 |
| 2 | 3.5795 | 3.6476 | +0.0681 | -0.0081 |
| 3 | 3.4949 | 3.7007 | +0.2058 | -0.0047 |
| 4 | 3.5231 | 3.6809 | +0.1578 | -0.0057 |
| 5 | 3.4497 | 3.5919 | +0.1422 | -0.0061 |
| 6 | 3.4304 | 3.5028 | +0.0724 | -0.0079 |
| 7 | 3.4693 | 3.4946 | +0.0253 | -0.0093 |
| 8 | 3.4911 | 3.4467 | +0.0444 | +0.0087 |
| 9 | 3.4260 | 3.6578 | +0.2319 | -0.0042 |
| 10 | 3.4314 | 3.4987 | +0.0673 | -0.0081 |
| 11 | 3.4865 | 3.5204 | +0.0340 | -0.0090 |
| 12 | 3.4852 | 3.4464 | +0.0388 | +0.0089 |
| 13 | 3.4961 | 3.5026 | +0.0065 | -0.0098 |
| 14 | 3.5444 | 3.6972 | -0.1529 | +0.0141 |
| 15 | 3.4169 | 3.7403 | -0.3234 | +0.0173 |
| 16 | 3.5135 | 3.5722 | -0.0587 | +0.0117 |
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 +0.1160 -> computed delta -0.0068; 3.4620 -0.0068 = 3.4552