First-grade cricket at Manly in the 1920s was dominated by one player, Les Gwynne.

Les Gwynne started his first-grade career at the age of 17 with the Glebe Club in 1913, and when World War I broke out he went overseas where he became one of the Services Sports Board of Control in London, and assisted in the formation of the now famous A.I.F. cricket team, first captained by Charlie Kelleway and later by Herbie Collins.

https://www.cricconnect.com/profile/338/manly-warringah-district-cricket-club/blog/2706/les-gwynne-dominates-the-1920s