Aidan O’Brien’s Lambourn is the class act in the field for the St Leger at Doncaster. Photo: Sportsfile

Aidan O’Brien’s Lambourn is the class act in the field for the St Leger at Doncaster. Photo: Sportsfile

Harbour Law won the St Leger at 22/1 in 2016 and remains the last horse priced in double figures to land Britain’s oldest, and final, classic of the season.

Since then, seven of the eight winners have come from the top two in the betting, with the 2020 winner Galileo Chrome third in the market at 4/1.