Mamzelle Stakes

The Mamzelle Stakes is a Grade III American thoroughbred horse race for three-year-old fillies over a distance of furlongs on the turf held annually in early May at Churchill Downs in Louisville, Kentucky during the spring meeting. The event currently carries a purse of $225,000.

History

Initial (1997–2008)

The inaugural running of the event was on May 1, 1997, over a distance of five furlongs for fillies and mares that were three years old or older. The event was won by the Pent Up Kiss by a neck and was ridden by US Hall of Fame jockey Mike E. Smith.
The event was scheduled on the Thursday meeting prior to the Kentucky Derby and held accordingly until 2008.
The 2001 event was won by the Group 1 winning Chilean-bred mare Seperata, who set a new record of 55.92 seconds winning by six lengths.
The Larry Rivelli trained Nicole's Dream in 2005 became the only mare to win the event twice.
In 2009 the event was not scheduled. However, Churchill Downs in 2010 on the Thursday before the Kentucky Derby, scheduled a newly named race which had identical conditions as the Mamzelle Stakes, namely the Unbridled Sidney Stakes. Unbridled Sidney was a winner of the Mamzelle Stakes in 2006.

Renewal (2019– )

In 2019 the event was reestablished with the new conditions for entry – that only three-year-old fillies could start. The event was scheduled to be held the Saturday after the Kentucky Derby and was named as the Mamzelle Overnight Stakes.
In 2020 due to the COVID-19 pandemic in the United States, Churchill Downs did not schedule the event in their updated and shortened September meeting.
The 2022 event was won by the 2021 Grade II Breeders' Cup Juvenile Turf Sprint Irish-bred winner Twilight Gleaming. Also the purse was raised to $150,000 and in 2022 raised again $200,000 whereby the Thoroughbred Owners and Breeders Association awarded the event Listed status.
In 2023 the event's distance was increased to furlongs. In 2024 the event's name was restored back to the Mamzelle Stakes.
In 2025 the event was upgraded to Grade III by the Thoroughbred Owners and Breeders Association.

Records

Speed record

furlongs: 1:01.46 – Shisospicy
5 furlongs: 0:55.92 – Separata

Margins

6 lengths – Separata

Most wins by a jockey:

4 – Robby Albarado

Most wins by a trainer:

2 – Richard E. Mandella
2 – Thomas M. Amoss
2 – Larry Rivelli
2 – Jose D'Angelo

Most wins by an owner:

2 – Dare To Dream Stable 4

Winners

Legend: