Tottenham re-established a nine-point gap to Premier League leaders Chelsea with a workmanlike victory over Middlesbrough at White Hart Lane.
Chelsea had moved 12 points clear with their impressive 3-1 win over Arsenal in the lunchtime kick-off, but Harry Kane's second-half penalty ensured Spurs did not cede any ground to their London rivals.
Tottenham now have clear air in second place after defeats for nearest challengers Arsenal and Liverpool, although fifth-placed Manchester City could close back to within a point when they play on Sunday.
Tottenham's seventh successive home win was secured when Kane fired home from 12 yards after Son Heung-min was hauled down in the area by Bernardo Espinosa and referee Mark Clattenburg correctly pointed to the spot.