The Lester Piggott Stakes is a Group 3 flat horse race in Great Britain open to fillies and mares aged four years or older.
It is run at Haydock Park over a distance of 1 mile, 3 furlongs and 175 yards (2,373 metres), and it is scheduled to take place each year in late May or early June.
The event was established in 2003, and it was initially classed at Listed level.
For several years the Pinnacle Stakes was run in memory of Lady Joan Westbrook, a successful owner and breeder of racehorses, who died in 2004.
[1] The race was promoted to Group 3 status in 2012.