Antivenom, Scarlett Begonia emerge as Ellis Park juvenile prospects

Antivenom and Scarlett Begonia turned Ellis Park’s first week into a useful proving ground for 2-year-olds with bigger ambitions, each winning a $100,000 maiden special weight on fast dirt and doing it with enough control to suggest the maiden was only the first checkpoint.

Antivenom got there first in Race 7 on July 4, covering 5 1/2 furlongs in 1:05.52 and winning by 3 1/2 lengths at 2:50 p.m. under Francisco Arrieta for Hall of Fame trainer Mark E. Casse and owner D. J. Stable LLC. He paid $3.20 to win after tracking just behind the pace, then quickened away under a hand ride. BloodHorse reported the colt earned $59,884 in the race, a tidy return for a debut that matched the betting confidence behind him.

That confidence had plenty of support. Antivenom, a son of Candy Ride, was a $850,000 purchase at the 2025 Fasig-Tipton Kentucky October Yearlings Sale, and his family page already carried plenty of heat through Unrivaled Princess, Unrivaled Belle and Unique Bella. Thoroughbred Daily News also noted that he fired three straight bullets at Mark Casse’s Keeneland base before shipping to Ellis Park, the kind of workout pattern that usually separates a real first-out horse from a fashionable one.

Scarlett Begonia answered two days later, and she did it in a different gear. The Brad H. Cox filly, ridden by Luan Machado, sat well off a fast pace before finishing best in Race 4 on July 6, stopping the clock in 1:04.94 and winning by 3 3/4 lengths. She paid $3.30 to win and was backed down to 3-5, with an opening quarter in :22.35 helping set up the race for a late move. Thoroughbred Daily News labeled her a TDN Rising Star, presented by Hagyard, and that tag fit the visual: she was never in danger once Machado tipped her out.

The comparison is the interesting part. Antivenom showed tactical speed and the ability to settle, then finish, which is often the shape of a colt who can stay around one-turn dirt routes or sharpen through another sprint. Scarlett Begonia’s closing punch looked even more flexible on paper, because a filly who can lose ground early and still win comfortably at 5 1/2 furlongs usually has room to stretch to more distance if her speed continues to carry. Both won in maiden special weights at the kind of purse level that attracts the best juveniles in the barn, not just the best in the race.

That matters at Ellis Park, which opened its 25-day summer meet on July 2 and is offering a record $4.125 million in stakes across 18 races through Aug. 23. A debut like either one can move fast from promise to assignment, and both Antivenom and Scarlett Begonia already look like names that belong on the summer shortlist.