[5] 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.

He enjoyed some success over the next years, finishing tenth in the Arlington jockey standings in 2010 and winning the 2011 Hawthorne meet.

[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.

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.