Where does Fleetwood beating Arsenal rank in biggest cup upsets?

Fleetwood Town produced a shock upset by defeating Arsenal in a cup competition, prompting BBC Sport to examine where this result ranks among the biggest FA Cup and League Cup upsets in history. Fleetwood Town, a lower-league side, beating Premier League giants Arsenal is considered a significant giant-killing in English football cup history. BBC Sport reviewed historical precedents to contextualise the scale of the upset.