Today’s game in north London represents a bit of a banana skin for a Spurs side which has struggled for consistency this season, even if they smashed Crystal Palace in a much-needed midweek morale boost.
Portsmouth cannot be blamed for truly believing in their chances on an upset however, while contending with a poor League One campaign which led to manager Danny Cowley getting the sack last week.
Where to watch Tottenham vs Portsmouth
TV channel: In the UK, the match will be televised live for free on the BBC Red Button with kick-off at 12.30pm GMT.
Live stream: Fans can also catch the game live online via the BBC iPlayer and BBC Sport website.
Live blog: You can follow all the action on matchday via Standard Sport’s live blog, with expert analysis from Dan Kilpatrick at the ground.