Initial VIPR
4.4430
Registry seed
Current VIPR
4.3976
After latest rated game
Net Movement
-0.0454
Current minus initial
Record
7-13
35% win rate · 20 rated games
Storyline
Mark Montgomery entered VIPR with an initial registry rating of 4.4430. Across 20 rated doubles games, the player went 7-13 and moved -0.0454, finishing at 4.3976.
Why It Moved
AI-generated explanation: The 7-13 record produced +0.0735 from wins and -0.1189 from losses, for a net move of -0.0454. The biggest single-game impact was -0.0147 against Steve LaVallee as partner and Doug LeFebvre / Richard Whittington as opponents. In game #18 on 2026-10-29, VIPR expected the player's team to have the edge, so the loss carried a larger drop: player team 4.4266 vs opponent team 4.2514.
Partner Chemistry
Partnership patterns are starting to emerge.
Mark's most common partner signals so far: Daren Haskell (2-2, 50%), Michael Leardi (1-2, 33%), Steve LaVallee (1-2, 33%), Jason Willhite (0-2, 0%). No partnership has reached both the 8+ match and 75%+ win-rate marker yet, so treat this as directional.
Streaks & Rivalries
Rivalry
Mark has faced Michael Leardi 7 times - record: 2-5. A close matchup worth watching.
Session Summary
| Date | W-L | Start | End | Net |
|---|---|---|---|---|
| 2026-09-24 | 2-2 | 4.4430 | 4.4489 | +0.0059 |
| 2026-10-01 | 2-2 | 4.4489 | 4.4494 | +0.0005 |
| 2026-10-15 | 3-1 | 4.4494 | 4.4707 | +0.0213 |
| 2026-10-22 | 0-4 | 4.4707 | 4.4430 | -0.0277 |
| 2026-10-29 | 0-4 | 4.4430 | 4.3976 | -0.0454 |
Game-By-Game Rating Trail
| # | Date | Result | Score | Partner | Opponents | Before | Change | After |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026-09-24 Thursday Men's Ladder League - Summer 2026 |
Win | 11-3 | Perry Olson | Richard Chris Armstrong / Michael Leardi | 4.4430 | +0.0085 | 4.4515 |
| 2 | 2026-09-24 Thursday Men's Ladder League - Summer 2026 |
Loss | 5-11 | Michael Leardi | Jim Bruton / Glenn Becker | 4.4515 | -0.0103 | 4.4412 |
| 3 | 2026-09-24 Thursday Men's Ladder League - Summer 2026 |
Win | 11-7 | Richard Chris Armstrong | Perry Olson / Glenn Becker | 4.4412 | +0.0124 | 4.4536 |
| 4 | 2026-09-24 Thursday Men's Ladder League - Summer 2026 |
Loss | 3-11 | Jim Bruton | Michael Leardi / Perry Olson | 4.4536 | -0.0047 | 4.4489 |
| 5 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Loss | 3-11 | Steve LaVallee | Michael Leardi / Daren Haskell | 4.4489 | -0.0074 | 4.4415 |
| 6 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Win | 11-4 | Michael Leardi | Daren Haskell / Steve LaVallee | 4.4415 | +0.0091 | 4.4506 |
| 7 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Win | 11-6 | Daren Haskell | Michael Leardi / Steve LaVallee | 4.4506 | +0.0097 | 4.4603 |
| 8 | 2026-10-01 Thursday Men's Ladder League - Fall 2026 |
Loss | 3-11 | Daren Haskell | Michael Leardi / Steve LaVallee | 4.4603 | -0.0109 | 4.4494 |
| 9 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Win | 11-4 | Scott Kasmere | Jason Willhite / Daren Haskell | 4.4494 | +0.0134 | 4.4628 |
| 10 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Win | 11-2 | Daren Haskell | Scott Kasmere / Steve LaVallee | 4.4628 | +0.0083 | 4.4711 |
| 11 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Win | 11-5 | Steve LaVallee | Jason Willhite / Scott Kasmere | 4.4711 | +0.0121 | 4.4832 |
| 12 | 2026-10-15 Thursday Men's Ladder League - Fall 2026 |
Loss | 3-11 | Jason Willhite | Daren Haskell / Steve LaVallee | 4.4832 | -0.0125 | 4.4707 |
| 13 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 10-11 | Jim Bruton | Gary Kray / Michael Leardi | 4.4707 | -0.0086 | 4.4621 |
| 14 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 8-11 | Michael Leardi | Jim Bruton / Jason Willhite | 4.4621 | -0.0061 | 4.4560 |
| 15 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 7-11 | Jason Willhite | Gary Kray / Jim Bruton | 4.4560 | -0.0049 | 4.4511 |
| 16 | 2026-10-22 Thursday Men's Ladder League - Fall 2026 |
Loss | 9-11 | Gary Kray | Michael Leardi / Jason Willhite | 4.4511 | -0.0081 | 4.4430 |
| 17 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Loss | 9-11 | Daren Haskell | Doug LeFebvre / Steve LaVallee | 4.4430 | -0.0126 | 4.4304 |
| 18 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Loss | 9-11 | Steve LaVallee | Doug LeFebvre / Richard Whittington | 4.4304 | -0.0147 | 4.4157 |
| 19 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Loss | 7-11 | Doug LeFebvre | Daren Haskell / Richard Whittington | 4.4157 | -0.0126 | 4.4031 |
| 20 | 2026-10-29 Thursday Men's Ladder League - Fall 2026 |
Loss | 3-11 | Richard Whittington | Daren Haskell / Steve LaVallee | 4.4031 | -0.0055 | 4.3976 |
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 | 4.6841 | 4.6328 | +0.0513 | +0.0085 |
| 2 | 4.4850 | 4.4729 | -0.0121 | -0.0103 |
| 3 | 4.5389 | 4.6256 | -0.0867 | +0.0124 |
| 4 | 4.5523 | 4.7584 | +0.2061 | -0.0047 |
| 5 | 4.4301 | 4.5228 | +0.0926 | -0.0074 |
| 6 | 4.4779 | 4.4451 | +0.0328 | +0.0091 |
| 7 | 4.4675 | 4.4555 | +0.0120 | +0.0097 |
| 8 | 4.4772 | 4.4459 | -0.0314 | -0.0109 |
| 9 | 4.4253 | 4.5482 | -0.1228 | +0.0134 |
| 10 | 4.4717 | 4.4133 | +0.0584 | +0.0083 |
| 11 | 4.4128 | 4.4884 | -0.0756 | +0.0121 |
| 12 | 4.5215 | 4.4333 | -0.0881 | -0.0125 |
| 13 | 4.5525 | 4.6032 | +0.0507 | -0.0086 |
| 14 | 4.4980 | 4.6392 | +0.1412 | -0.0061 |
| 15 | 4.4975 | 4.6952 | +0.1978 | -0.0049 |
| 16 | 4.5187 | 4.5869 | +0.0683 | -0.0081 |
| 17 | 4.4673 | 4.3754 | -0.0919 | -0.0126 |
| 18 | 4.4266 | 4.2514 | -0.1753 | -0.0147 |
| 19 | 4.3955 | 4.3034 | -0.0921 | -0.0126 |
| 20 | 4.2754 | 4.4419 | +0.1665 | -0.0055 |
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 +0.0513 -> computed delta +0.0085; 4.4430 +0.0085 = 4.4515