Jockey Miguel Mena has died after being struck by a car on the motorway, aged 34.
The American Grade-1 winning rider leaves behind a wife and two young children after being killed on Halloween in Louisville, Kentucky.
He was walking next to Interstate-64. His death was ruled 'accidental' by the Jefferson County Coroner's Office in Kentucky.
It was determined that Mena, who had more than 2000 victories to his name, died of blunt force trauma. An investigation is underway, but no charges against the driver of the vehicle are pending, according to police.
Police chief Rick Sanders said Mena had exited his car, crossed the eastbound lanes of the motorway and climbed over a wall before being struck by a vehicle travelling westbound.
He died at the scene.
Mike Anderson, president of Churchill Downs racetrack where Mena enjoyed some of his most famous victories, paid tribute to the jockey.
“This news is absolutely shocking, terrible and heartbreaking," he said.
“Our team is devastated to learn of Miguel's passing. He was such a courageous rider who fought to overcome several challenges and adversity.
“We'll miss his bright smile. Our deepest condolences are extended to his many friends, fellow riders and family, and our immediate thoughts are with his wife April and his daughters Naelah and Montserrat.”
Mena had racked up more than £50million in career earnings after recording his first victory in 2003 following his arrival in the US from Peru, aged 17.
He suffered a shocking injury in 2018 which halted his progress, shattering eight bones in his ankle and heel, forcing him to miss eight months of action.
His return was marked by him being awarded the Randy Romero Pure Courage Award in February 2020, given to an active jockey that has overcome adversity.
Mena had recorded 49 wins from his 516 rides this year, the last of which came just a day before he was tragically killed.
Fellow jockeys paid tribute to Mena following the news.
Alex Canchari said: "My heart hurts right now. I can't believe this.
"RIP my friend Miguel Mena. A devoted father, an amazing/fearless jockey and a role model to so many.
"My heart is broken for Miguel's family. I have no words. Rest easy Cholo."
Jose Santos Jr, a close friend of Mena, added: "RIP Miguel Mena.
"Over the past two years I've had the fortune to work side by side with Miguel.
"One of the most likeable guys I had been around. Eternally appreciate the opportunity he gave me.
"Condolences to his family and all that loved him. RIP Cholo. Gone but not forgotten."