Did you know: Kentucky Oaks champion Monomoy Girl has a promising daughter

Jul 30, 2026 Kellie Reilly/Brisnet.com

Effusive overcomes a hefty bump to win on debut at Saratoga

Effusive overcomes a hefty bump to win on debut at Saratoga (Photo by Chelsea Durand/Coglianese Photos)

As the 2018 Kentucky Oaks (G1) winner and a two-time Breeders’ Cup champion, Monomoy Girl had a stellar career on the racetrack. But the Spendthrift Farm mare is now emerging as a notable producer, and her latest runner to hit the track, two-year-old filly Effusive, recently starred in her Saratoga debut.

Effusive is trained by Brad Cox, who also conditioned $4.7 million-earner Monomoy Girl. The daughter appears to have inherited her mother’s talent and mannerisms.

By Spendthrift’s flagship stallion Into Mischief, North America’s leading sire for the past seven years, Effusive was sent off as the 2.05-1 favorite in a July 18 maiden at the Spa. The homebred had a tricky post on the rail, which can be particularly challenging for inexperienced youngsters, and a sloppy track presented another variable.

Yet Effusive had more to overcome as the race unfolded. Although she broke well, she settled off the pace before advancing on the inside. She hugged the rail turning into the stretch like an old pro, but just when she was poised to angle out, she got clobbered by a filly on her outside. Key Colony Beach, a fellow debutante, drifted in and bumped right into Effusive’s shoulder.

The jostling would have been enough for an ordinary juvenile to lose focus and momentum, and maybe revert to self-protective mode. Effusive instead responded as if it were fuel for motivation.

Shrugging off the incident in short order, Effusive resumed her rally, overtook early leader Cruising Again, and drove clear. Key Colony Beach stayed on to take second, but Effusive signaled that it all came easily. She pricked her ears, a way of asking jockey Manny Franco if he needed anything else.

Effusive crossed the wire a handy 1 1/4-length winner while finishing six furlongs in 1:11.69. The bare facts don’t convey her triumph over adversity or the circumstances that upgrade her performance.

“It was a very impressive debut win,” said Cox’s son and assistant, Blake. “Breaking from the rail is not an easy thing to do with a firster. She broke well, and they kind of ran away from her a little bit, and she got dirt in her face.

“The plan was to have Manny finishing up with her, and we were hoping for a good effort, but we didn't know if it would be enough or not. They straightened up, and she got slammed a bit by the (David) Fawkes horse (Key Colony Beach), and it showed a lot for her to continue to run on.

“Her mother was the same way. Whatever didn't go her way didn't matter; she still crossed the wire first most of the time.”

Indeed, Monomoy Girl won 14 of 17 starts and never placed worse than second. She would have been 15-for-17 if not for her disqualification in the 2018 Cotillion (G1), where she was demoted for interference. That was the lone loss of an otherwise flawless sophomore campaign.

Monomoy Girl’s first loss came as a juvenile in the 2017 Golden Rod (G2) at Churchill Downs, just missing by a neck. Her other reverse came in a photo finish in her career finale in the 2021 Apple Blossom (G1) at Oaklawn Park.

As that date range indicates, Monomoy Girl was a top performer over the long haul. Voted champion three-year-old filly after sweeping the 2018 Kentucky Oaks, Ashland (G1), Acorn (G1), Coaching Club American Oaks (G1), and Breeders’ Cup Distaff (G1), she was on the sidelines for all of 2019. But she picked up right where she left off in 2020, going 4-for-4 including the La Troienne (G1), Ruffian (G2), and another Breeders’ Cup Distaff to clinch champion older dirt female honors.

“She was our first great horse,” the younger Cox said. “She was the first Grade 1 winner, first Oaks winner, first Breeders' Cup winner, so she taught us a lot.

“A horse of a lifetime, for sure, and we're grateful. She was an unbelievable filly to be around.”

One day after regaining her Breeders’ Cup Distaff title, Monomoy Girl toured the ring at Fasig-Tipton and sold to Spendthrift for $9.5 million.

Blake Cox expanded on how Effusive reminds him of Monomoy Girl.

“She runs like her mom with her head up in the air, and then right after the wire they showed her on TV with her ears up, just like her mom did. There's some similarities there for sure,” Cox said.

“Both are very mild-mannered. She hasn't turned a hair since she's been here. She was perfect in the paddock, Manny (Franco) kicked her away, and she had a good warmup. Manny had nothing but good things to say.”

Effusive is Monomoy Girl’s second foal. Her first was a colt, Provenance, who was also by Into Mischief. Trained by Hall of Famer Bob Baffert, Provenance broke his maiden at Santa Anita last fall and finished third in the Los Alamitos Futurity (G2). Unfortunately, hopes of progressing on the Road to the Kentucky Derby were cut short by an injury that forced him into retirement. Provenance will enter stud in Maryland in 2027.

“We truly bred the best to the best to get Provenance,” Spendthrift General Manager Ned Toffey said in a press release. “His dam won the Kentucky Oaks, and his sire now has three Kentucky Derby-winning sons. Provenance was on target for the classics until his injury.”

Effusive is picking up the baton for Monomoy Girl. She has stamped herself as a contender for the Sept. 5 Spinaway (G1), Saratoga’s marquee race in her division. The seven-furlong event serves as a “Win & You’re In” for the Breeders’ Cup Juvenile Fillies (G1) at Keeneland.

If Effusive wins the Spinaway, Monomoy Girl would join an elite club including Hall of Famer Rachel Alexandra and Seaside Attraction. They were also Kentucky Oaks heroines whose daughters won the Spinaway. Seaside Attraction, the 1990 Oaks winner, produced champion Golden Attraction, star of the 1995 Spinaway. Rachel Alexandra, who romped by a record 20 1/4 lengths in the 2009 Oaks, was responsible for Rachel’s Valentina, the 2015 Spinaway victress.

So many Oaks champions have gone on to become influential broodmares that we’re starting a new monthly series on KentuckyDerby.com to showcase them. Stay tuned as we explore their ongoing legacy!

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