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 (PFs), Beyer Speed Figures (BSFs), Timeform Ratings (TRs), Racing Post Ratings (RPRs), BRIS Ratings (BRISs) and Equibase Speed Figures (ESFs).  The PF/BSF comparison is based on our earlier studies.  The PF/RPR, PF/BRIS and PF/ESF comparisons are based on our own unpublished results.  The BSF/TR comparison is based on a 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 -84.  Using the Table, this figure is equivalent to a BSF of about 113, a TR of about 128, a RPR of about 129, a BRIS Rating of about 111 and an ESF of 123. 

CLASS

   PF   BSF   TR   RPR   BRIS   ESF
  50 66 81 75 72 66
$2.5K 40 69 84 79 75 71
  30 72 87 83 78 75
  20 76 91 86 81 79
  10 80 95 90 84 83
$10K 0 83 98 94 87 88
  -10 86 101 98 90 92
  -20 90 105 102 92 96
Open NY NW1 -30 94 109 107 95 100
Open NY NW2 -40 97 112 111 98 104
Open NY NW3 -50 101 116 115 101 109
  -60 104 119 119 104 113
  -70 108 123 123 107 117
G3 -72 108 123 124 108 118
G2 -78 110 125 126 109 121
  -80 111 126 127 110 121
G1 -84 113 128 129 111 123
  -90 115 130 131 113 126
  -100 118 133 136 116 130
  -110 122 137 140 119 134
  -120 125 140 144 121 138
    -130   128   143   149   124   142