Geroux came to the United States for the first time in early 2007, working with trainer Patrick Biancone for a few months before returning briefly to France.[3]
In the fall of 2007, Geroux returned to the United States with the intention of joining the Kentucky racing circuit. On the opening day at Keeneland, he suffered a serious fall, suffering a broken wrist and two fractured vertebrae. He recuperated in France for several months then returned to the States with Chicago as his home base. He enjoyed some success over the next years, finishing tenth in the Arlington jockey standings in 2010 and winning the 2011 Hawthorne meet.[3] He earned his first stakes wins on Zoeling in the 2010 Leemat Stakes at Presque Isle Downs.[1]
In 2010, Geroux changed agents to Doug Bredar and gradually climbed the jockey ranks in the Chicago area. In 2014, Geroux scored his first Grade I victory in the Breeders' Cup Sprint aboard Chicago-based Work All Week.[1]
In 2015, Geroux relocated to Kentucky and was the leading rider at Kentucky Downs, where he won five races on two different days, and also led the Fair Grounds 2015-6 meet.[4] He won the Arlington Million with The Pizza Man and the Breeders' Cup Juvenile Fillies Turf with Catch a Glimpse and the Breeders' Cup Turf Sprint with Mongolian Saturday.[1]
Geroux had a career best year in 2016, with earnings of $17,690,013 and 217 wins, including two Grade I wins on I'm a Chatterbox.[1] He picked up the mount on Gun Runner at the start of the year and rode him to a win in the Louisiana Derby and a third-place finish in the Kentucky Derby. After the pair finished second in the Breeders' Cup Dirt Mile, they capped the year with a win in the Clark Handicap.[6] Another highlight was winning four graded races on Arlington Million Day: the Beverly D, Secretariat, American St. Leger and Pucker Up.[7] He earned his 1,000th North American win on December 29 aboard Mr. Misunderstood at the Fair Grounds.[8]
In 2017, Geroux was ranked in the top ten of North American jockeys. With Gun Runner, he won the Breeders' Cup Classic and four other stakes race, plus a second-place finish in the Dubai World Cup. "You ride a thousand horses a year, and this one, there's just something special," said Geroux of his connection in Gun Runner. "I'm not a true believer in that, but I do believe now."[9]
In 2021, Geroux rode Mandaloun to a second-place finish in the Kentucky Derby. However, Mandaloun was later elevated to winner after Medina Spirit was disqualified for a positive betamethasone test post-race.[10]
| Chart (2007–present) |
Rank
by earnings |
| National Earnings List for Jockeys 2007 |
1105 |
| National Earnings List for Jockeys 2008 |
595 |
| National Earnings List for Jockeys 2009 |
260 |
| National Earnings List for Jockeys 2010 |
212 |
| National Earnings List for Jockeys 2011 |
78 |
| National Earnings List for Jockeys 2012 |
126 |
| National Earnings List for Jockeys 2013 |
96 |
| National Earnings List for Jockeys 2014 |
35 |
| National Earnings List for Jockeys 2015 |
13 |
| National Earnings List for Jockeys 2016 |
5 |
| National Earnings List for Jockeys 2017 |
7 |
| National Earnings List for Jockeys 2018 |
5 |
| National Earnings List for Jockeys 2019 |
13 |
| National Earnings List for Jockeys 2020 |
6 |
| National Earnings List for Jockeys 2021 |
7 |
