A Comparison of PF, BSF, TR, RPR, BRIS and ER Speed Figures

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 2011 involving almost 600 North American races over more than a year. 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 107, a TR of about 122, a RPR of about 125, a BRIS Rating of about 107 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	60	79	77	80	75
$2.5K	40	64	81	80	81	78
	30	68	84	83	83	80
	20	71	87	86	85	83
	10	75	90	89	87	86
$10K	0	79	92	93	89	89
	-10	83	95	96	91	92
	-20	87	99	99	93	95
NY NW1	-30	91	102	103	95	98
NY NW2	-40	95	105	107	97	101
NY NW3	-50	99	109	111	99	105
	-60	103	113	115	101	108
	-70	107	116	119	103	112
G3	-72	108	117	120	104	113
G2	-78	110	119	123	105	115
	-80	111	120	123	106	116
G1	-84	112	122	125	107	117
	-90	115	124	128	108	120
	-100	119	129	133	110	124
	-110	122	133	137	113	128
	-120	126	138	142	115	132
	-130	130	143	148	118	137

CORR. COEFF. =		0.91		0.75	0.78	0.84