why is the glasgow derby called the old firm
Old Firm The origin of the term is unclear but may derive from the two clubs' initial match in which the commentators referred to the teams as "like two old, firm friends",[9] or alternatively may stem from a satirical cartoon published in a magazine prior to the 1904 Scottish Cup Final between the sides, depicting an elderly man with a sandwich board reading "Patronise The Old Firm: Rangers, Celtic Ltd", highlighting the mutual commercial benefits of their meetings.[10][11] The name may also be a reference to these two teams being among the original 11 members of the Scottish Football League formed in 1890.[12]
North London derby As of 20 August 2017, there have been 180 competitive first-class meetings between the two teams since the first league meeting in 1909, of which Arsenal have won 75 and Tottenham 56.[34] The most goals in one game were scored in the closely contested 5–4 Arsenal Premiership victory at White Hart Lane on 13 November 2004. The biggest winning margin was a 6–0 away win by Arsenal on 6 March 1935. Tottenham have twice won 5–0 (25 December 1911 and 4 April 1983) and Arsenal once (23 December 1978), with all three fixtures taking place at White Hart Lane. Arsenal also won by 5-2 margins both in February and November of 2012 home at the Emirates.[6][16]