Showemup can secure the New Zealand Bloodstock Southern Filly of the Year series with victory in Saturday's Listed NZB Warstep Stakes.

The Sally McKay-trained three-year-old currently shares second place with Residential and La Diosa behind Starvoia, but that trio are absent from this weekend's Riccarton feature.

Grand Soleil is the only runner who can spoil Showemup's party and if the Tony Pike-trained runner wins the Warstep Stakes and Showemup finishes second the pair will be tied at the top of the table with 11 points apiece.

The filly with the best finishing position in the race will, however, be determined the winner of the series.