Julien R. Leparoux is a French Eclipse Award winning jockey currently racing in the United States. He has won seven Breeders' Cup races, including the 2015 Breeders' Cup Mile with Champion Turf Mare Tepin and the 2016 Breeders' Cup Juvenile with Classic Empire.

Tepin is a retired Thoroughbred racehorse who was named the American Champion Female Turf Horse of 2015 and 2016. She showed very promising form as a two-year-old in 2013 when she won the Delta Princess Stakes on the dirt. After a disappointing three-year-old season when she failed to win in four starts, she emerged as a top-class turf performer in 2015. Her wins as a four-year-old included the Churchill Distaff Turf Mile Stakes, Just A Game Stakes and First Lady Stakes before recording her biggest success when defeating male opposition in the Breeders' Cup Mile. In 2016, she won her first four starts and was then sent to England, where she defeated a field of leading European milers to win the Queen Anne Stakes. On returning to North America, she extended her winning streak to eight in the Woodbine Mile. The streak included three Grade/Group 1 wins against male horses in three different countries. Although Tepin finished second in her next two starts including an effort to defend her title in the Breeders Cup Mile, she was still named the Champion Female Turf Horse for the second year in a row. Tepin was inducted to the Canadian Horse Racing Hall of Fame in 2020 and the US National Museum of Racing and Hall of Fame in 2022.