Upsets were prominent on Tuesday's Blue Grass Day undercard at Keeneland, the biggest being Positano Sunset's 14-1 surprise over the favorite Emery in the $623,338 Madison (G1) for fillies and mares.

John and Susan Moore sold their Grade 2-winning homebred Princess Grace last November, but her half-brother Catnip is now stepping up to be her successor.

Hitherto a stakes bridesmaid, Proxy wore down West Will Power to win his first trophy in Friday’s $750,000 Clark (G1). Jockey Joel Rosario swept both graded stakes on the Churchill Downs card, previously steering Bubble Rock to victory in the $300,000 Mrs. Revere (G2).

Imperador thwarted two-time champ Arklow in Saturday’s Turf Cup (G2), a “Win and You’re In” for the Breeders’ Cup Turf (G1), and Princess Grace extended her winning streak in the Ladies Turf (G3).

East Coast shippers swept both graded stakes at Del Mar Saturday, Pappacap in the Best Pal S. (G2) and Princess Grace in the Yellow Ribbon H. (G2).

Although the least experienced of the six fillies in Saturday's $200,000 Mrs. Revere Stakes (G3) at Churchill Downs, Princess Grace proved an old pro.

Like Funny Cide a New York-bred, Tiz the Law stumbled at the start and was taken back to fifth by jockey Manny Franco. Tiz the Law dominated the Champagne.