Amateurs
#81Viper 640 · US 130 · KHYC
611
+14±314
Overall Rank
#81
of 105
Percentile
Top 77%
of 105 boats
Rating
611
Confidence
±314
Low
Races
13
Recent Form
+25
avg last 5 races
Last raced: Aug 10, 2019
Rating Over Time
1240+262Direct Competitors
Boats Amateurs has raced against most often, with head-to-head finish record.
Boiling Point212
Viper · Rating 905
9–0
100% wins · 9 races
Nice Asp221
Viper 640 · Rating 486
2–5
29% wins · 7 races
Breakaway192
viper 640 · Rating 163
7–0
100% wins · 7 races
It's All Good204
viper 640 · Rating 637
2–5
29% wins · 7 races
Euphio26
viper 640 · Rating 163
6–0
100% wins · 6 races
Fng221
viper 640 · Rating 197
6–0
100% wins · 6 races
#hmb301
Viper 640 · Rating 591
6–0
100% wins · 6 races
300267
viper 640 · Rating 451
4–2
67% wins · 6 races
Race History
13 racesViper 640 Pacific Coast Championship · R6
Aug 10, 2019/3 of 18
+14
1240
Viper 640 Pacific Coast Championship · R5
Aug 10, 2019/6 of 18
-9
1226
Viper 640 Pacific Coast Championship · R4
Aug 10, 2019/2 of 18
+34
1235
Viper 640 Pacific Coast Championship · R3
Aug 10, 2019/2 of 18
+41
1201
Viper 640 Pacific Coast Championship · R2
Aug 10, 2019/3 of 18
+44
1160
Viper 640 Pacific Coast Championship · R1
Aug 10, 2019/7 of 18
+2
1116
Viper 640 PCC · R7
Aug 19, 2018/6 of 14
-1
1115
Viper 640 PCC · R6
Aug 19, 2018/6 of 14
-4
1115
Viper 640 PCC · R5
Aug 19, 2018/3 of 14
+45
1119
Viper 640 PCC · R4
Aug 18, 2018/6 of 14
0
1074
Viper 640 PCC · R3
Aug 18, 2018/5 of 14
-14
1074
Viper 640 PCC · R2
Aug 18, 2018/4 of 14
+110
1088
Viper 640 PCC · R1
Aug 18, 2018/4 of 14
+186
978
| Date | Regatta | Place | Rating After | Change |
|---|---|---|---|---|
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R6 | 3 / 18 | 1240 | +14 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R5 | 6 / 18 | 1226 | -9 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R4 | 2 / 18 | 1235 | +34 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R3 | 2 / 18 | 1201 | +41 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R2 | 3 / 18 | 1160 | +44 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R1 | 7 / 18 | 1116 | +2 |
| Aug 19, 2018 | Viper 640 PCC · R7 | 6 / 14 | 1115 | -1 |
| Aug 19, 2018 | Viper 640 PCC · R6 | 6 / 14 | 1115 | -4 |
| Aug 19, 2018 | Viper 640 PCC · R5 | 3 / 14 | 1119 | +45 |
| Aug 18, 2018 | Viper 640 PCC · R4 | 6 / 14 | 1074 | 0 |
| Aug 18, 2018 | Viper 640 PCC · R3 | 5 / 14 | 1074 | -14 |
| Aug 18, 2018 | Viper 640 PCC · R2 | 4 / 14 | 1088 | +110 |
| Aug 18, 2018 | Viper 640 PCC · R1 | 4 / 14 | 978 | +186 |
About the Rating
Ratings are computed using Glicko-2, a chess-style system that considers who you beat and who beat you. Winning against higher-rated boats earns more points than beating lower-rated boats.
The overall rank compares this boat to all others across every class. To see how it stacks up within its class, use the “View all Viper 640” link above.
The confidence band (±314) shows how certain we are about this rating. It narrows as more races are completed and widens during periods of inactivity.
The shaded area on the chart represents the 95% confidence interval — the true skill of this boat likely falls within that range.