Brighton punished a lacklustre Tottenham to grab their first home league win since June and go seven points clear of the drop.
Leandro Trossard grabbed the game’s only goal, side-footing in Pascal Gross’ cutback after 17 minutes.
And the hosts always looked likelier to score the match’s second, with substitute Aaron Connolly having his late effort cleared off the line by Spurs’ Toby Alderweireld.
Jose Mourinho’s side struggled to create chances late on, with defeat meaning they stay sixth, six points off the top four.