Watford's first-round Carling Cup tie against Bristol Rovers at the Memorial Stadium has been postponed on police advice.
Director of finance at Rovers, Toni Watola, said: "Following a request from Avon and Somerset Police, the club have regretfully made the decision to cancel tonight's game."
Bristol City's scheduled tie against Swindon was postponed last night for the same reason.
A statement on the club's website said: "Given the current unrest across the country over the last few days, the police requested that the game be postponed.
"They had concerns about the access route in and out of the ground, and supporters having to go through Stokes Croft - one of the main areas where the disturbances have taken place."