Danon Decile debuted at a newcomer race for 2-year olds held at Tokyo Racecourse over a course of 1600m on October 9, where he came in fourth behind Fabulous Star.

[4] Danon Decile started the season off with the Keisei Hai, held on January 14 at Nakayama Racecourse, where he ran 5th for most of the way before taking the lead on the final stretch.

Urban Chic attempted to catch up to the horse, but managed to stave him off with a 3/4 length lead; securing his first graded victory and the title of the oldest JRA jockey to win a graded race for Norihiro Yokoyama, who was his jockey and was 55 years and 10 months and 23 days old at the time.

[3][7] On May 26, at the 91st Tokyo Yushun (Japanese Derby), the horse was placed in the front of the pack, where he was able to take the lead from Justin Milano on the stretch.

This marked Yokoyama's 3rd Derby win, and the oldest JRA jockey to win any graded JRA race at the age of 56 years 3 months and 4 days, surpassing Yutaka Take's previous record of 54 years 9 months and 10 days.