JOCKEYS
How much each jockey adds or subtracts vs the average rider
Oisin Murphy
+3.6
Flavien Prat
+2.9
Joel Rosario
+2.8
Irad Ortiz, Jr.
+2.8
Rafael Bejarano
+2.7
Jose Ortiz
+2.5
Francisco Arrieta
+2.5
Mike Smith
+2.5
Mickael Barzalona
+2.5
Javier Castellano
+2.5
Yedsit Hazlewood
+2.4
Walter Rodriguez
+2.4
Juan Hernandez
+2.4
John Velazquez
+2.4
Ryusei Sakai
+2.4
Paco Lopez
+2.3
Ryan Moore
+2.3
Lauralea Glaser
+2.3
Jose Lezcano
+2.3
Angel Castillo
+2.3
Shane Foley
+2.3
Samuel Marin
+2.2
Diego Saenz
+2.2
Dylan Davis
+2.2
Elias Peltroche
+2.1
TRAINERS
How much each trainer's barn adds or subtracts vs average
Aidan O'Brien
+15.3
Charles Appleby
+15.2
Francis - Henri Graffard
+10.5
Bob Baffert
+10.2
Andrew Balding
+9.5
John Gosden
+9.4
Roger Varian
+8.6
Joseph O'Brien
+8.1
Daisuke Takayanagi
+8.1
Philip Bauer
+8.1
Hideyuki Mori
+7.8
Chad Brown
+7.7
Simon Crisford
+7.5
John Shirreffs
+7.3
Brian House
+7.2
Adrian Murray
+7.1
Richard Mandella
+7.0
Yoshito Yahagi
+7.0
Brad Cox
+6.9
Cherie DeVaux
+6.6
Claude McGaughey III
+6.6
Patrick Biancone
+6.5
William Walden
+6.5
Todd Pletcher
+6.4
Paulo Lobo
+6.4
TRACKS
Track speed ranked fastest to slowest
RACE CLASS
How class level affects expected speed
SURFACE
Surface effect on speed
synthetic
+0.7
turf
+0.3
dirt
REF
TRACK CONDITION
How going affects speed (dirt and turf labeled separately)
Fast / Firm (reference)
+0.0
AGE
Age effect on speed (main effect only; age × sex interactions excluded)
4
+1.5
5
+1.3
6
+0.6
3
REF
7+
-0.7
unknown
-2.3
2
-4.0
SEX
Sex effect on speed (male = reference; stripped from the displayed figure but used in the regression)
male
REF
gelding
-0.8
female
-4.6
unknown
-7.7
TIME BETWEEN RACES
Effect of layoff length on performance
short_0-2wk
+0.3
normal (2-6wk)
REF
fresh_6-13wk
-0.2
layoff_3-6mo
-0.8
layoff_6mo+
-1.1
debut
-2.4
EQUIPMENT & MEDICATION
Lasix
+1.8
Blinkers
-0.8
Taken off turf
+0.3