She's a Tiger, who led all the way and got home first by a narrow margin, was set down to second after drifting out in the final yards, bumping lightly with Ria Antonia.
Rosalind came from far back to finish third in the 1 1/16-miles race and Sweet Reason finished fourth. She's a Tiger, a Tale of the Cat Filly with Gary Stevens up, finished in 1:43.02.
Ria Antonia, a Rockport Harbor filly who went to the post at odds of 32-1, was ridden by Javier Castellano.
It was only her second win, following a maiden victory over the Woodbine all-weather course in July. She had finished off the board in two subsequent stakes tries.
She's a Tiger won the Grade I Del Mar Debutante this summer over the all-weather track and has three wins and three seconds from six starts.