Lemieux is a 3 year old filly and has raced from 2021 to 2022. She was sired by Nyquist out of the The Factor mare Polish A Diamond . She was trained by Mark Casse and has raced for D. J. Stable LLC, and was bred in Florida, United States by Westbury Stables LLC. Lemieux has raced at Belmont Park, Churchill Downs, Gulfstream Park, Presque Isle Downs, Saratoga, Woodbine with wins at Gulfstream Park, Saratoga. Her has a stakes win at the 2021 Brethren Juvenile Fillies (RS).