|
Benchmark Testing in JCapper
|
General Overview
During the first two months of 2004 I ran some benchmark tests
of all of the various factors supported by JCapper. These tests included approximately
2100 races from the following tracks: Aqueduct, Laurel, Gulfstream, Oaklawn, Fairgrounds,
Golden Gate, Turf Paradise, and Santa Anita. These tests were not meant to be exhaustive.
There were other tracks running at the time. Rather, these tests were done to get a general
idea of the effectiveness of the factors supported within JCapper and to identify how
some of these factors might relate to each other. It was from these tests that the
idea of creating the JRating and the Assigned Probability Odds Line first surfaced.
The results of some of these tests, along with a discussion about the test results and the
factors involved are shown below.
Benchmark Tests
Dirt Sprints
|
Factor |
Amt Won/Lost |
Amt Bet |
ROI to $1.00 |
Wins |
Plays |
Pct |
Win Pct Impact |
ROI Impact |
Benchmark (All Horses) |
-4633.00 |
21272.00 |
.7822 |
1302 |
10636 |
.1224 |
1.0000 |
1.0000 |
Recency (=N) |
-2744.80 |
9990.00 |
.7252 |
543 |
4995 |
.1087 |
.8881 |
.9271 |
Recency (=Y) |
-1908.00 |
11282.00 |
.8309 |
755 |
5641 |
.1338 |
1.0931 |
1.0623 |
FormRating ( < 70 ) |
-2305.10 |
8006.00 |
.7121 |
381 |
4003 |
.0952 |
.7778 |
.9104 |
FormRating ( >= 70 ) |
-2338.70 |
13266.00 |
.8237 |
919 |
6633 |
.1385 |
1.1315 |
1.0531 |
Workout Brilliance ( Rank = 1 ) |
-287.40 |
2914.00 |
.9014 |
261 |
1457 |
.1791 |
1.4633 |
1.1524 |
PScore ( < 75 ) |
-2154.00 |
6202.00 |
.6527 |
459 |
3101 |
.1480 |
1.2092 |
.8344 |
PScore ( >= 75 ) |
-2492.40 |
15070.00 |
.8346 |
841 |
7535 |
.1116 |
.9118 |
1.0670 |
CPace ( Rank = 1 ) |
-351.90 |
2592.00 |
.8642 |
287 |
1296 |
.2215 |
1.8096 |
1.1048 |
Sustained Pace ( Rank = 1 ) |
-421.70 |
2900.00 |
.8546 |
353 |
1450 |
.2434 |
1.9886 |
1.0926 |
JRating (Rank=1) |
+7.00 |
2594.00 |
1.0027 |
348 |
1297 |
.2683 |
2.1920 |
1.2819 |
Bris Prime Power (Rank=1) |
-392.30 |
2596.00 |
.8489 |
410 |
1298 |
.3159 |
2.5801 |
1.0853 |
WeightedFigure (Rank=1) |
-196.00 |
2592.00 |
.9244 |
324 |
1296 |
.2500 |
2.043 |
1.1818 |
WeightedFigure (Gap >= 7pts) |
+68.70 |
424.00 |
1.1620 |
71 |
212 |
.3349 |
2.736 |
1.4856 |
Bris Speed Figure Last Race (Rank=1) |
-412.80 |
2878.00 |
.8566 |
389 |
1439 |
.2703 |
2.2083 |
1.0951 |
Bris Speed Figure Last Race (Gap >=7 pts) |
-45.60 |
572.00 |
.9203 |
107 |
286 |
.3741 |
3.0564 |
1.1766 |
Assigned Probability >= .3000 |
-17.10 |
788.00 |
.9783 |
146 |
394 |
.3706 |
3.0278 |
1.2507 |
Post Time Odds <= 2.33 to 1 |
-513.60 |
3008.00 |
.8293 |
527 |
1504 |
.3504 |
2.8628 |
1.0602 |
UDM = DS_JCapper_OOB |
+250.40 |
892.00 |
1.2807 |
80 |
446 |
.1794 |
1.4657 |
1.6373 |
|
Benchmark Tests
Dirt Routes
|
Factor |
Amt Won/Lost |
Amt Bet |
ROI to $1.00 |
Wins |
Plays |
Pct |
Win Pct Impact |
ROI Impact |
Benchmark (All Horses) |
-2642.30 |
12630.00 |
.7908 |
817 |
6315 |
.1294 |
1.0000 |
1.0000 |
Recency (=N) |
-1145.50 |
4332.00 |
.7356 |
260 |
2166 |
.1200 |
.9274 |
.9302 |
Recency (=Y) |
-1542.70 |
8298.00 |
.8141 |
550 |
4149 |
.1326 |
1.0247 |
1.0295 |
FormRating ( < 70 ) |
-1414.70 |
4548.00 |
.6889 |
212 |
2274 |
.0932 |
.7203 |
.8711 |
FormRating ( >= 70 ) |
-1227.60 |
8082.00 |
.8481 |
605 |
4041 |
.1497 |
1.1569 |
1.0725 |
Workout Brilliance ( Rank = 1 ) |
-83.90 |
1890.00 |
.9556 |
177 |
945 |
.1873 |
1.4475 |
1.2084 |
PScore ( < 75 ) |
-900.40 |
4798.00 |
.8123 |
389 |
2399 |
.1622 |
1.2535 |
1.0272 |
PScore ( >= 75 ) |
-1741.90 |
7832.00 |
.7776 |
428 |
3916 |
.1093 |
.8447 |
.9833 |
CPace ( Rank = 1 ) |
-199.40 |
1616.00 |
.8766 |
155 |
808 |
.1918 |
1.4822 |
1.1085 |
Sustained Pace ( Rank = 1 ) |
-184.80 |
1758.00 |
.8949 |
207 |
879 |
.2355 |
1.8199 |
1.1316 |
JRating (Rank=1) |
-4.50 |
1616.00 |
.9972 |
212 |
808 |
.2624 |
2.0278 |
1.2610 |
Bris Prime Power (Rank=1) |
-168.20 |
1620.00 |
.8962 |
252 |
810 |
.3111 |
2.4042 |
1.1333 |
WeightedFigure (Rank=1) |
-211.70 |
1624.00 |
.8696 |
191 |
812 |
.2352 |
1.8176 |
1.0997 |
WeightedFigure (Gap >= 7pts) |
-13.90 |
490.00 |
.9268 |
30 |
95 |
.3158 |
2.4405 |
1.1720 |
Bris Speed Figure Last Race (Rank=1) |
-375.40 |
1864.00 |
.7686 |
233 |
932 |
.2500 |
1.9320 |
1.0099 |
Bris Speed Figure Last Race (Gap >=7 pts) |
-9.20 |
210.00 |
.9562 |
41 |
105 |
.3905 |
3.0178 |
1.2092 |
Assigned Probability >= .3000 |
+113.60 |
474.00 |
1.2397 |
89 |
237 |
.3755 |
2.9019 |
1.5676 |
Post Time Odds <= 2.33 to 1 |
-308.30 |
1894.00 |
.8372 |
328 |
947 |
.3464 |
2.6770 |
1.0587 |
UDM = DR_JCapper_OOB |
+60.00 |
572.00 |
1.1049 |
50 |
286 |
.1748 |
1.3509 |
1.3972 |
|
Bris Speed Figure (Last Race)
One factor tested was Bris Speed Figure (Last Race.) This is a very easy
factor to identify. It is simply the Last Race Bris Speed Figure. All
surfaces and distances were considered. No attempt was made to break any ties.
Dirt Sprints
All Odds Ranges
Bris Speed Figure (Last Race)
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
-412.80
|
2878.00
|
.8566
|
389
|
1439
|
.2703
|
2
|
-353.30
|
2698.00
|
.8691
|
246
|
1349
|
.1824
|
3
|
-693.00
|
2794.00
|
.7520
|
173
|
1397
|
.1238
|
4
|
-1024.00
|
2694.00
|
.6196
|
124
|
1347
|
.0921
|
Totals
|
-2483.90
|
11064.00
|
.7755
|
932
|
5532
|
.1685
|
Win Percent Top 4 Contenders
|
.6686
|
ROI Top 4 Contenders
|
.7755
|
|
|
Dirt Routes
All Odds Ranges
Bris Speed Figure (Last Race)
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
-375.40
|
1864.00
|
.7986
|
233
|
932
|
.2500
|
2
|
-227.10
|
1642.00
|
.8617
|
160
|
821
|
.1949
|
3
|
-305.30
|
1658.00
|
.8159
|
115
|
829
|
.1387
|
4
|
-319.30
|
1580.00
|
.7979
|
100
|
790
|
.1266
|
Totals
|
-1227.10
|
6744.00
|
.8181
|
608
|
3372
|
.1803
|
Win Percent Top 4 Contenders
|
.7102
|
ROI Top 4 Contenders
|
.8181
|
|
|
Dirt Sprints
Horses at Odds of 6-1 and higher
Bris Speed Figure (Last Race)
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
-80.40
|
450
|
.8213
|
17
|
225
|
.0756
|
2
|
-97.40
|
934.00
|
.8957
|
34
|
467
|
.0728
|
3
|
-339.40
|
1482.00
|
7710
|
50
|
741
|
.0675
|
4
|
-698.60
|
1706.00
|
.5905
|
40
|
853
|
.0469
|
Totals
|
-1215.80
|
4572.00
|
.7341
|
141
|
2286
|
.0617
|
Win Percent Top 4 Contenders
|
.2628
|
ROI Top 4 Contenders
|
.7341
|
|
|
Dirt Routes
Horses at Odds of 6-1 and higher
Bris Speed Figure (Last Race)
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
+26.00
|
240.00
|
1.1083
|
13
|
120
|
.1083
|
2
|
-137.20
|
522.00
|
.7372
|
19
|
261
|
.0728
|
3
|
-87.20
|
748.00
|
.8826
|
27
|
374
|
.0722
|
4
|
-239.60
|
938.00
|
.7446
|
29
|
469
|
.0618
|
Totals
|
-438.60
|
2448.00
|
.8208
|
88
|
1224
|
.0719
|
Win Percent Top 4 Contenders
|
.3151
|
ROI Top 4 Contenders
|
.8208
|
|
|
WeightedFigure
This number represents the performance of a horse's most recent running line. This is a
compound number derived using an algorithm where E1, E2, and Late Pace are weighted according to
the impacts of historical occurances and are combined into a single number.
Dirt Sprints
All Odds Ranges
WeightedFigure
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
-196.00
|
2592.00
|
.9244
|
324
|
1296
|
.2500
|
2
|
-265.00
|
2650.00
|
.9000
|
235
|
1325
|
.1774
|
3
|
-433.40
|
2736.00
|
.8416
|
198
|
1368
|
.1447
|
4
|
-600.70
|
2696.00
|
.7772
|
152
|
1348
|
.1128
|
Totals
|
-1495.10
|
10674.00
|
.8599
|
909
|
5337
|
.1703
|
Win Percent Top 4 Contenders
|
.6849
|
ROI Top 4 Contenders
|
.8599
|
|
|
Dirt Routes
All Odds Ranges
WeightedFigure
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
-211.70
|
1624.00
|
.8696
|
191
|
812
|
.2352
|
2
|
-101.90
|
1624.00
|
.9373
|
165
|
812
|
.2032
|
3
|
-415.80
|
1614.00
|
.7424
|
119
|
807
|
.1475
|
4
|
+48.70
|
1614.00
|
1.0302
|
112
|
807
|
.1388
|
Totals
|
-680.70
|
6476.00
|
.8949
|
587
|
3238
|
.1813
|
Win Percent Top 4 Contenders
|
.7247
|
ROI Top 4 Contenders
|
.8949
|
|
|
Dirt Sprints
Horses at Odds of 6-1 and higher
WeightedFigure
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
+61.80
|
628.00
|
1.0984
|
31
|
314
|
.0987
|
2
|
+106.20
|
1010.00
|
1.1051
|
40
|
505
|
.0792
|
3
|
-242.00
|
1010.00
|
.8256
|
42
|
694
|
.0605
|
4
|
-373.20
|
1696.00
|
.7800
|
49
|
848
|
.0578
|
Totals
|
-447.20
|
4722.00
|
.9053
|
162
|
2361
|
.0686
|
Win Percent Top 4 Contenders
|
.2962
|
ROI Top 4 Contenders
|
.9053
|
|
|
Dirt Routes
Horses at Odds of 6-1 and higher
WeightedFigure
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
+10.20
|
364.00
|
1.0280
|
17
|
182
|
.0934
|
2
|
-29.40
|
590.00
|
.9502
|
23
|
295
|
.0780
|
3
|
-151.80
|
714.00
|
.7874
|
25
|
357
|
.0700
|
4
|
+202.80
|
872.00
|
1.2326
|
40
|
436
|
.0917
|
Totals
|
+31.80
|
2540.00
|
1.0125
|
105
|
1270
|
.0827
|
Win Percent Top 4 Contenders
|
.3331
|
ROI Top 4 Contenders
|
1.0125
|
|
|
Comparing Weighted Figure with Bris Speed Figure (Last Race)
A comparison between the Bris Speed Figure (Last Race) and the JCapper
Weighted Figure reveals some interesting information.
First, horses with the highest Bris Speed Figure (Last Race) won
a slighly higher percentage of races than horses with the highest
JCapper Weighted Figure.
Despite this, horses with the highest JCapper Weighted Figure returned more money
than did horses with the highest Bris Speed Figure (Last Race).
Also, the top 4 ranked horses in JCapper Weighted Figure outperformed the
top 4 rated horses in Bris Speed Figure (Last Race) in both of the following
categories: Win Percentage for the Top 4 Contenders and ROI for the Top 4 Contenders.
This was true for both Dirt Sprints and Dirt Routes without consideration of
odds ranges. More importantly, this was also true for horses that were
sent to post at odds of 6-1 and higher.
What might this mean? To the profit minded
player it might mean that the potential for profit is greater using the JCapper
Weighted Figure than it might be using the Bris Last Race Speed Figure.
Why might this be so? The past several years have seen a huge proliferation of
players who get their handicapping information online. More and more players
these days are using handicapping software as a tool in their wagering decision
making process. The Bris Last Race Speed Figure is something that is seen and
used by thousands of players every day. Yet the JCapper Weighted Figure is only
seen by a small handful of players each day. It has predictive utility that parallels
the Bris Speed Figure (Last Race.) The JCapper Weighted Figure is a unique number.
As such, perhaps it is different enough from the speed figures seen and used
by the majority of other players that it just might be useful to the profit
minded player.
It is inherently easier to create profitable wagering models based on unique numbers
such as the JCapper Weighted Figure than trying to do so using numbers available to the
vast majority of players such as the Bris Speed Figure (Last Race.) Weighted Figure is
certainly not a magic bullet, nor is it the strongest factor in JCapper. But, consider
this: In Dirt Sprints, the top two ranked horses using this
factor were profitable at odds of 6-1 and higher. In Dirt Routes, the top four
ranked horses using this factor when taken as a group were profitable at odds of 6-1 and higher.
A player could use the Database and Modeling Tools in JCapper to analyze the top two Weighted
Figure horses at 6-1 and higher in dirt sprints and the top four Weighted Figure horses
at 6-1 and higher in dirt routes. Undesirable horses within these sets could be identified
and removed from further consideration. It is very likely that the set of remaining horses
could form a basis for profitable play. A user doing this might create several
profitable User Defined Models using Weighted Figure as a starting point.
Bris Prime Power
This number is produced by Bloodstock Research and is read by JCapper directly from the Bris
DRF Single Format data file. Although not profitable on its own, this number does have some
predictive utility. Here is how Bris Prime Power fared during the Benchmark Testing Period:
Dirt Sprints
All Odds Ranges
PrimePwr
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
- 392.30
|
2596.00
|
.8489
|
410
|
1298
|
.3159
|
2
|
- 416.50
|
2634.00
|
.8419
|
266
|
1317
|
.2020
|
3
|
- 50.20
|
2728.00
|
.9816
|
214
|
1364
|
.1569
|
4
|
- 614.00
|
2692.00
|
.7719
|
124
|
1346
|
.0921
|
Totals
|
- 1473.00
|
10650.00
|
.8617
|
1014
|
5325
|
.1904
|
Win Percent Top 4 Contenders
|
.7669
|
ROI Top 4 Contenders
|
.8617
|
|
|
Dirt Routes
All Odds Ranges
PrimePwr
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
- 168.20
|
1620.00
|
.8962
|
252
|
810
|
.3111
|
2
|
- 555.80
|
1612.00
|
.6552
|
137
|
806
|
.1700
|
3
|
- 152.20
|
1620.00
|
.9060
|
144
|
810
|
.1778
|
4
|
- 311.70
|
1614.00
|
.8069
|
95
|
807
|
.1177
|
Totals
|
- 1187.90
|
6466.00
|
.8163
|
628
|
3233
|
.1943
|
Win Percent Top 4 Contenders
|
.7766
|
ROI Top 4 Contenders
|
.8163
|
|
|
Dirt Sprints
Horses at Odds of 6-1 and higher
PrimePwr
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
- 12.80
|
124.00
|
.8968
|
6
|
62
|
.0968
|
2
|
- 47.00
|
534.00
|
.9120
|
23
|
267
|
.0861
|
3
|
+ 102.60
|
1236.00
|
1.0830
|
59
|
618
|
.0955
|
4
|
- 258.40
|
1718.00
|
.8496
|
59
|
859
|
.0867
|
Totals
|
- 215.60
|
3612.00
|
.9403
|
147
|
1806
|
.0814
|
Win Percent Top 4 Contenders
|
.3471
|
ROI Top 4 Contenders
|
.9403
|
|
|
Dirt Routes
Horses at Odds of 6-1 and higher
PrimePwr
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
+ 25.20
|
82.00
|
1.3073
|
6
|
41
|
.1463
|
2
|
- 121.80
|
284.00
|
.5711
|
9
|
142
|
.0634
|
3
|
- 41.40
|
572.00
|
.9276
|
28
|
286
|
.0979
|
4
|
- 138.20
|
900.00
|
.8464
|
36
|
450
|
.0800
|
Totals
|
- 276.20
|
1841.00
|
.8500
|
79
|
1270
|
.0860
|
Win Percent Top 4 Contenders
|
.3876
|
ROI Top 4 Contenders
|
.8500
|
|
|
JRating
JRating is produced by a JCapper algorithm using many factors weighted according to the impacts
of historical occurances. It has both predictive utility and good profit potential. Here is how
JRating fared during the Benchmark Testing Period:
Dirt Sprints
All Odds Ranges
JRating
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
+ 7.00
|
2594.00
|
1.0027
|
348
|
1297
|
.2683
|
2
|
- 250.10
|
2590
|
.9034
|
239
|
1295
|
.1846
|
3
|
- 544.20
|
2600.00
|
.7907
|
175
|
1300
|
.1346
|
4
|
- 495.70
|
2584.00
|
.8082
|
158
|
1292
|
.1223
|
Totals
|
- 1282.90
|
10368.00
|
.8763
|
920
|
5184
|
.1775
|
Win Percent Top 4 Contenders
|
.7098
|
ROI Top 4 Contenders
|
.8763
|
|
|
Dirt Routes
All Odds Ranges
JRating
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
- 4.50
|
1616.00
|
.9972
|
212
|
808
|
.2624
|
2
|
- 118.70
|
1616.00
|
.9265
|
159
|
808
|
.1968
|
3
|
- 380.10
|
1616.00
|
.7648
|
118
|
808
|
.1460
|
4
|
- 230.90
|
1616.00
|
.8571
|
103
|
808
|
.1275
|
Totals
|
- 734.20
|
6464.00
|
.8864
|
592
|
3232
|
.1832
|
Win Percent Top 4 Contenders
|
.7327
|
ROI Top 4 Contenders
|
.8864
|
|
|
Dirt Sprints
Horses at Odds of 6-1 and higher
JRating
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
+ 156.80
|
572.00
|
1.2741
|
30
|
286
|
.1049
|
2
|
+ 24.40
|
952.00
|
1.0256
|
38
|
476
|
.0798
|
3
|
- 154.80
|
1236.00
|
.8748
|
41
|
618
|
.0663
|
4
|
- 326.60
|
1542.00
|
.7882
|
45
|
771
|
.0584
|
Totals
|
- 300.20
|
4302.00
|
.9302
|
154
|
2151
|
.0716
|
Win Percent Top 4 Contenders
|
.3094
|
ROI Top 4 Contenders
|
.9302
|
|
|
Dirt Routes
Horses at Odds of 6-1 and higher
JRating
|
Rank
|
Amt
Gain/Loss
|
Amt
Bet
|
Roi
|
Wins
|
Plays
|
Pct
|
1
|
+ 33.80
|
422.00
|
1.0801
|
22
|
211
|
.1043
|
2
|
+ 26.60
|
522.00
|
1.0510
|
22
|
261
|
.0843
|
3
|
- 98.00
|
674.00
|
.8546
|
22
|
337
|
.0653
|
4
|
- 78.60
|
898.00
|
.9125
|
34
|
449
|
.0757
|
Totals
|
- 116.20
|
2516.00
|
.9538
|
100
|
1258
|
.0795
|
Win Percent Top 4 Contenders
|
.3296
|
ROI Top 4 Contenders
|
.9538
|
|
|
Copyright © 2005 JCapper Software
|
|