Leer began playing in the 1760s. His name has become almost synonymous with the now archaic long stop fielding position (i.e., directly behind the wicket-keeper) that was deemed so necessary in underarm days.
According to Arthur Haygarth, Leer "was a good and successful bat, but was mostly famous as long-stop to Thomas Brett’s tremendous bowling in the Hambledon matches. He was always called "Little George", and was a fine singer, having a sweet counter-tenor voice. In John Nyren’s book, he is stated to have been a native of Hambledon, but latterly he was a brewer, residing at Petersfield, where he died".
George Leer was a small man who made 44 known first-class appearances from the 1772 season to 1782.