Jam Session
#1167J/105 · usa434 · StFYC
780
-17±254
Overall Rank
#1167
of 1792
Percentile
Top 65%
of 1792 boats
Rating
780
Confidence
±254
Low
Races
127
Recent Form
-17
avg last 5 races
Last raced: Sep 15, 2022
Rating Over Time
1288+304Direct Competitors
Boats Jam Session has raced against most often, with head-to-head finish record.
Akula16
J/105 · Rating 1203
69–36
66% wins · 105 races
BlackhawkUSA 40
J/105 · Rating 1222
33–72
31% wins · 105 races
Arbitrage116
J/105 · Rating 1258
33–60
35% wins · 93 races
Jabberwocky149
J/105 · Rating 1207
62–27–1
70% wins · 90 races
Donkey Jack26
J/105 · Rating 1256
55–28
66% wins · 83 races
Box of Rain46
J105 · Rating 1157
58–17
77% wins · 75 races
Godot44
J/105 · Rating 804
29–45
39% wins · 74 races
Mojo119
J/105 · Rating 1267
24–48
33% wins · 72 races
Race History
127 racesRolex Big Boat Series · R7
Sep 15, 2022/12 of 29
-17
1288
Rolex Big Boat Series · R6
Sep 15, 2022/16 of 29
-32
1305
Rolex Big Boat Series · R5
Sep 15, 2022/8 of 29
-9
1337
Rolex Big Boat Series · R4
Sep 15, 2022/12 of 29
-27
1347
Rolex Big Boat Series · R3
Sep 15, 2022/6 of 29
0
1374
Rolex Big Boat Series · R2
Sep 15, 2022/7 of 29
0
1375
Rolex Big Boat Series · R1
Sep 15, 2022/2 of 29
+24
1375
Elite Keelboat Regatta · R5
May 18, 2022/4 of 23
+14
1351
Elite Keelboat Regatta · R4
May 15, 2022/2 of 23
+27
1337
Elite Keelboat Regatta · R3
May 14, 2022/6 of 23
+2
1311
Elite Keelboat Regatta · R2
May 14, 2022/3 of 23
+31
1309
Elite Keelboat Regatta · R1
May 14, 2022/5 of 23
+22
1277
Spring Fest · R6
Apr 10, 2022/1 of 24
+15
1256
Spring Fest · R5
Apr 10, 2022/RET
-21
1241
Spring Fest · R4
Apr 10, 2022/5 of 24
+2
1262
Spring Fest · R3
Apr 9, 2022/4 of 24
+7
1260
Spring Fest · R2
Apr 9, 2022/6 of 24
+2
1252
Spring Fest · R1
Apr 9, 2022/11 of 24
-15
1251
Corinthian
Feb 26, 2022/DNF
0
1266
Three Bridge Fiasco
Jan 29, 2022/30 of 235
-15
1266
| Date | Regatta | Place | Rating After | Change |
|---|---|---|---|---|
| Sep 15, 2022 | Rolex Big Boat Series · R7 | 12 / 29 | 1288 | -17 |
| Sep 15, 2022 | Rolex Big Boat Series · R6 | 16 / 29 | 1305 | -32 |
| Sep 15, 2022 | Rolex Big Boat Series · R5 | 8 / 29 | 1337 | -9 |
| Sep 15, 2022 | Rolex Big Boat Series · R4 | 12 / 29 | 1347 | -27 |
| Sep 15, 2022 | Rolex Big Boat Series · R3 | 6 / 29 | 1374 | 0 |
| Sep 15, 2022 | Rolex Big Boat Series · R2 | 7 / 29 | 1375 | 0 |
| Sep 15, 2022 | Rolex Big Boat Series · R1 | 2 / 29 | 1375 | +24 |
| May 18, 2022 | Elite Keelboat Regatta · R5 | 4 / 23 | 1351 | +14 |
| May 15, 2022 | Elite Keelboat Regatta · R4 | 2 / 23 | 1337 | +27 |
| May 14, 2022 | Elite Keelboat Regatta · R3 | 6 / 23 | 1311 | +2 |
| May 14, 2022 | Elite Keelboat Regatta · R2 | 3 / 23 | 1309 | +31 |
| May 14, 2022 | Elite Keelboat Regatta · R1 | 5 / 23 | 1277 | +22 |
| Apr 10, 2022 | Spring Fest · R6 | 1 / 24 | 1256 | +15 |
| Apr 10, 2022 | Spring Fest · R5 | RET / 24 | 1241 | -21 |
| Apr 10, 2022 | Spring Fest · R4 | 5 / 24 | 1262 | +2 |
| Apr 9, 2022 | Spring Fest · R3 | 4 / 24 | 1260 | +7 |
| Apr 9, 2022 | Spring Fest · R2 | 6 / 24 | 1252 | +2 |
| Apr 9, 2022 | Spring Fest · R1 | 11 / 24 | 1251 | -15 |
| Feb 26, 2022 | Corinthian | DNF / 86 | 1266 | 0 |
| Jan 29, 2022 | Three Bridge Fiasco | 30 / 235 | 1266 | -15 |
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 J/105” link above.
The confidence band (±254) 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.