He has won multiple training titles at Del Mar Racetrack and his horses have accumulated over $68 million in career earnings.
[5] In 2017, Miller attracted national attention with his first win at the Breeders' Cup with Stormy Liberal in the Turf Sprint on November 4.
[6] Because of the effects of the Lilac Fire (see below), Miller's stable had a slow start in 2018 but gradually recovered, winning the Del Mar training title that summer.
"To do something that's never been done, especially in this business, considering the hundreds of thousands of races that are run each year around the world, it's amazing and a real testament not only to the horses but to our whole team.
"[7] Miller earned his 1,000th career win on November 16, 2018 with Haydens Havoc in a turf sprint at Del Mar, his home racetrack.
"I know that there may be some speculation related to this decision; however, I want to make it very clear that it is not a result of any regulatory action, secret agreement, or hidden agenda of any kind," he said.
[9] Miller bases many of his horses at San Luis Rey Downs, a training center a few miles from his home in Encinatas.
[10][11] "We couldn't find a lot of the horses for two to three days and eventually tracked down Richard's Boy in a backyard farm ten miles away, while Conquest Tsunami spent a month in the clinic due to severe burns," said Miller.
In 2018, Miller earned a suspension after receiving his seventh disorderly conduct violation, related to derogatory comments to a former employee.