Conrad Farms' Shamrock Rose, the champion filly and mare sprinter of 2018, tops a field of nine entered Wednesday for Saturday's 18th running of the $300,000 Madison Stakes (G1) going 7 furlongs on the main track.

The Madison will go as the eighth race on Saturday, April 6 11-race program with a 5:10 p.m. ET post time at Keeneland Racecourse. First post time Saturday is 1:05 p.m.

Trained by Mark Casse, Shamrock Rose won the Lexus Raven Run (G2) here last fall before earning divisional honors with a victory in the Breeders' Cup Filly and Mare Sprint (G1) at Churchill Downs in November.

Coming off a third-place finish in the 1 1/16-mile Azeri (G2) at Oaklawn March 16, Shamrock Rose will be ridden by Irad Ortiz Jr. and break from post position nine.

Also figuring to draw support in the Madison are the 1-2 finishers from the Barbara Fritchie (G3) at Laurel on Feb. 16: Late Night Pow Wow and Spiced Perfection, who finished a head apart.

Breeze Easy's West Virginia-bred Late Night Pow Wow brings a nine-race win streak to Keeneland and a career mark of 12-11-1-0.

Trained by Javier Contreras, who will be saddling his first Keeneland starter, Late Night Pow Wow made her first nine starts at Charles Town and her past three at Laurel with those resulting in stakes triumphs. Luis Saez will be aboard for the first time Saturday and break from post position six.

Pantofel Stable, Wachtel Stable and Peter Deutsch's Spiced Perfection closed out 2018 with a victory in the La Brea (G1) at Santa Anita. Trained by Peter Miller, she will be ridden by Javier Castellano and break from post position five.