After half-time it was much the same story, with Watford only threatening in isolated moments, and Son further confirmed Spurs' dominance by meeting Kieran Trippier's perfect cross with a lovely half-volley at the far post. Harry Kane, returning as a second-half substitute, struck the bar with an injury-time free-kick - the last kick of the game - and Son might have sealed his hat-trick from his earlier pass. Mauricio Pocehttino's side are now four points behind Chelsea, who play at Bournemouth later on Saturday (17:30 BST). And they are also 14 points clear of fifth-placed Arsenal, who have two games in hand and play at Crystal Palace on Monday (20:00).