Sydney's leading trainer Chris Waller dominates betting for the Group 1 George Ryder Stakes with Boban and Red Tracer equal favourites at $3.20 due to the scratching of Appearance.

Sportsbet.com.au are already betting on Saturday's $1 million event despite the final field and barrier draw not conducted until Wednesday morning.

Boban is a confirmed starter while Waller is still undecided whether he will run Red Tracer. Sacred Falls, who is also trained by Chris Waller, is on the third line of betting at $8.

George Ryder Stakes betting from Sportsbet.com.au;

$3.20     Red Tracer                (in from $4.00)
$3.20     Boban                       (in from $6.00)
$8.00     Sacred Falls               (in from $11)
$9.00     Streama                    (in from $13)
$10        Eurozone                   (in from $17)
$11        El Roca                      (out from $9.00)
$21        Speediness                (in from $26)
$21        Terravista                  (steady)
$21        Toydini                      (out from $15)
$26        Lidari                         (in from $34)
$26        Gordon Lord Byron   (out from $15)
$26        Tres Blue                   (out from $21)
$34        Fontelina                   (out from $26)
$41        Fat Al                         (in from $51)
$41        My Kingdom of Fire  (in from $51)
$51        Ninth Legion              (in from $101)
$51        Bel Thor                    (in from $151)