Dosage: Pedigree & Performance
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Speed Figures:
A Comparison of Performance Figures, Beyer Figures,
Timeform Ratings, Racing Post Ratings, BRIS Ratings and Equibase Ratings

The Table below shows the approximate comparative numerical values for Performance Figures (PF), Beyer Speed Figures (BSF), Timeform Ratings (TR), Racing Post Ratings (RPR), BRIS Ratings (BRIS) and Equibase Speed Figures (EB) where the numbers apply to races for older males in open company.  The comparisons are based on newly-completed studies in 2013 involving over 400 North American races.  The BSF/TR comparison is based on a previously published approximation in which a TR is about 15 points higher than the corresponding BSF.  By way of illustration, a typical Grade 1 winner will have a PF of -77.  Using the Table, this figure is equivalent to a BSF of about 106, a TR of about 121, a RPR of about 119, a BRIS Rating of about 105 and an EB of about 117.  The correlation coefficents which measure the closeness of the fit between PFs and the other figures are displayed as well.  The nearer a correlation coefficient is to 1.00, the better the fit between the two sets of figures.

CLASS PF BSF TR RPR BRIS EB
50 57 72 71 74 70
40 61 76 75 77 73
30 64 79 78 79 77
20 68 83 82 82 81
10 72 87 86 84 85
$10K 0 76 91 90 87 88
-10 80 95 94 89 92
-20 84 99 97 91 96
-30 88 103 101 94 99
-40 91 106 105 96 103
-50 95 110 109 99 107
CAN-3 -53 96 111 110 99 108
CAN-2 -56 98 113 111 100 109
CAN-1 -60 99 114 113 101 111
G3 -62 100 115 114 102 111
G2 -66 101 116 115 102 113
-70 103 118 117 103 114
G1 -77 106 121 119 105 117
-80 107 122 120 106 118
-90 111 126 124 108 122
-100 115 130 128 111 126
-110 118 133 132 113 129
-120 122 137 136 115 133
-130    126    141    139    118    137
CORR. COEFF. = 0.90 0.86 0.86 0.88