Spurs blew the Hornets away this afternoon, with Dele Alli, Eric Dier and Heung-min Son all on target before the interval.
Son fired home his second to end the game as a contest, while Mauricio Pochettino was afforded the luxury of easing Harry Kane back into action for the final half an hour.
The striker was unfortunate not to add further gloss to the scoreline after hitting the crossbar in injury time as Spurs recorded their 11th consecutive home victory.
The north Londoners are now just four points adrift of pacesetters Chelsea and Mazzarri, who cut a frustrated figure on the touchline throughout, was in owe of his opponents' strength in depth.
"Phenomenal - they have everything," the Italian said when asked to assess Spurs. "On the pitch? Top players. Off the pitch? Top players.
"We started well but they had three great shots from three champion players. Like we say in Italy - the first goal cut our legs completely.
"Unfortunately when your are losing 3-0 from the first half the second half becomes difficult.
"It was not nice [seeing Kane come on]. I would have liked to swap places with my assistant," Mazzarri joked.
Kane may not have added to his goal tally this afternoon but his early return is set to give the entire club a significant boost ahead of the run-in as Spurs are refusing to give up on their title dream.
Mauricio Pochettino has vowed to "keep pushing" leaders Chelsea as the finish line approaches, with one more slip up by Antonio Conte's side set to fuel Spurs' belief they are capable of pipping their capital rivals at the post even further.