In October 2016, he was claimed by trainer Peter Miller for $40,000 and went on to become a multiple stakes winner, including back-to-back wins in the Breeders' Cup Turf Sprint in 2017 and 2018.

[5] Stormy Liberal made his first start on September 3, 2014 in a maiden special weight run at a distance of 5+1⁄2 furlongs on the then-existing all-weather track at Del Mar.

Turning into the stretch, Stormy Liberal took the lead then held off a late run from Battle of Evermore to win by a length.

[6] Stormy Liberal was then stepped up in class to enter the Cecil B. DeMille Stakes at Del Mar on November 30, run over a distance of one mile.

His only win came over the Santa Anita downhill turf course on October 24, in which the field included future sprint champion Roy H.[1][8] Stormy Liberal started his four-year-old season with three straight second place finishes in allowance optional claiming races, then a fifth.

[10] On March 4, Stormy Liberal followed up by winning the listed Joe Hernandez Stakes, again over Santa Anita's downhill turf course.

[14] Stormy Liberal then had a long layoff before returning on November 4 in the Breeders' Cup Turf Sprint, held that year at Del Mar – trainer Peter Miller's home base.

Going off as a 30-1 longshot, Stormy Liberal staged a major upset when he beat stablemate Richard's Boy by a head after rating behind a fast early pace.

[16] After running eleventh in the Hong Kong Sprint at Sha Tin, Stormy Liberal finished the year with a record of five stakes win from seven starts.

"[17] Stormy Liberal was then shipped to Meydan Racecourse in Dubai for the Al Quoz Sprint on March 31, in which he finished second to Jungle Cat.

[18] He made his next start in the Jaipur International at Belmont Park, finishing sixth to Disco Partner after lacking his normal closing kick.

[19] After four straight losses, Miller dropped Stormy Liberal down to allowance company at Del Mar on July 25.

"[20] On August 17, Stormy Liberal returned to stakes company in the listed Green Flash Handicap at Del Mar.

"[22] Despite his three-race winning streak, Stormy Liberal went off at odds of 7-1 in the Breeders' Cup Turf Sprint, held in 2018 at Churchill Downs in Kentucky.

[1] After the race, David Bernsen bought out Rockingham Ranch to become sole owner, then sent the horse to Florida for an extensive medical evaluation.