Davinson Sanchez scored a 96th-minute winner as Tottenham continued their push for a Premier League top-four place with a last-gasp victory over struggling Watford at Vicarage Road.
Defender Sanchez headed in from Son Heung-min's cross as Spurs climbed up to fifth in the table, two points behind Arsenal.
Hornets goalkeeper Daniel Bachmann denied Son Heung-min at close range in the second half, after Lloris had produced an equally superb save from Josh King at the other end.
Joao Pedro had a late penalty appeal dismissed after Spurs goalkeeper Hugo Lloris raced out of his goal to deny the forward.