Initial VIPR
4.8040
Registry seed
Current VIPR
4.8244
After latest rated game
Net Movement
+0.0204
Current minus initial
Record
3-1
75% win rate · 4 rated games
Storyline
Robert Kraft entered VIPR with an initial registry rating of 4.8040. Across 4 rated doubles games, the player went 3-1 and moved +0.0204, finishing at 4.8244.
Why It Moved
AI-generated explanation: The 3-1 record produced +0.0301 from wins and -0.0097 from losses, for a net move of +0.0204. The biggest single-game impact was +0.0109 against Jim Bruton as partner and Ted Custer / Richard Chris Armstrong as opponents. In game #4 on 2026-10-01, the player's team was the lower-rated team, so the win carried a larger gain: player team 4.7684 vs opponent team 4.7998.
Partner Chemistry
Partnership patterns are starting to emerge.
Robert's most common partner signals so far: Jim Bruton (1-1, 50%), Richard Chris Armstrong (1-0, 100%), Ted Custer (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
Robert has faced Richard Chris Armstrong 3 times - record: 2-1. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-10-01 | 3-1 | 4.8040 | 4.8244 | +0.0204 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Win | 11-3 | Ted Custer | Richard Chris Armstrong / Jim Bruton | 4.8040 | +0.0092 | 4.8132 |
| 2 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Win | 11-8 | Richard Chris Armstrong | Ted Custer / Jim Bruton | 4.8132 | +0.0100 | 4.8232 |
| 3 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Loss | 3-11 | Jim Bruton | Ted Custer / Richard Chris Armstrong | 4.8232 | -0.0097 | 4.8135 |
| 4 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Win | 11-10 | Jim Bruton | Ted Custer / Richard Chris Armstrong | 4.8135 | +0.0109 | 4.8244 |
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 | 4.8058 | 4.7790 | +0.0268 | +0.0092 |
| 2 | 4.7844 | 4.7839 | +0.0005 | +0.0100 |
| 3 | 4.7781 | 4.7901 | +0.0120 | -0.0097 |
| 4 | 4.7684 | 4.7998 | -0.0314 | +0.0109 |
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 +0.0268 -> computed delta +0.0092; 4.8040 +0.0092 = 4.8132