For the third time in three Premier League outings, Tottenham ground out victory from a tense and tight fixture.
Heung-min Son won it with his head at Burnley and Gareth Bale against Brighton and this time, at West Brom, it was Harry Kane, glancing a header into the net in the 88th minute.
Spurs held on to the slender lead, moved to the top of the Premier League and celebrated fiercely at the final whistle.
It was precisely the sort of performance Jose Mourinho will demand of them if they are to turn this promising start into a genuine title challenge.