He married May Victoria Machar (1887-1928) in 1913.
A Full-forward, from 1909 until 1919 he was Geelong's leading goalkicker in every season except 1915. In 1916 the club did not take part in the competition due to the war and Martini played with Richmond for the season and topped their goalkicking.
With 51 goals in 1910 he became the first Geelong player to kick over 50 goals in a season and it was the biggest tally in the league for the year. When he retired in 1920 he had managed to kick 333 goals for Geelong which at the time was a club record.
- "Percy Martini - Player Bio". Australian Football. Retrieved 27 December 2014.
- Deaths: Martini, The Age, (Friday, 29 November 1929), p.1.
- Hogan P: The Tigers Of Old, Richmond FC, Melbourne 1996