25 August 1928: For the first match of the new season, Chapman introduced numbers on the players’ shirts (1-22 across the two teams). Arsenal lost, and the FA said subsequently said “no”, for no apparent reason other than it was new.
25 August 2004: Arsenal 3 Blackburn 0 – the game that broke Nottingham Forest’s 42 league games unbeaten record set in 1977/8 by Brian Clough’s team. Arsenal of course went on to 49.
25 August 2007: Arsenal 1 Manchester City 0. It was part of a now largely forgotten run of 28 games unbeaten.