Tottenham have lost their first two Premier League matches and failed to score in both as rejuvenated duo Anthony Elanga and Yoane Wissa struck to earn Newcastle a 2-0 victory.
Spurs' big-spending summer, in which they have splashed £320m on eight new players, is yet to have an impact on Roberto De Zerbi's side, who were booed off a week on from being thrashed 3-0 at Brentford and lacked a cutting edge in their first home league game despite handing a debut to forward Omar Marmoush.
De Zerbi's other key signing, £75m winger Savio, has already been dealt an injury blow, missing out with "muscle fatigue", while midfielder Sandro Tonali, who left Newcastle in a £100m move, was mocked by his former supporters as they collected their first league win under Matthias Jaissle.
Tottenham were the better side in the first half, with Newcastle goalkeeper Lucas Hornicek making saves from Mathys Tel and Jan Paul van Hecke, but Elanga, who struggled last season but shone last weekend with a goal against Liverpool, swivelled in the area and sent a shot off the post midway through the second half to put Newcastle ahead.
De Zerbi reacted with three substitutes, yet Spurs never looked likely to find an equaliser, and Wissa, another who disappointed under previous boss Eddie Howe, compounded their misery. Newcastle sub Nick Woltemade headed a corner into the six-yard box and Wissa, with his back to goal, hooked the ball over his head into the net.
15: SAVE! Newcastle goalkeeper Hornicek flies high to his left to parry Tel's curling shot.
17: BLOCK! Hall throws himself in front of Porro's close-range effort to stop a certain goal.
38: SAVE! Van Hecke rises to meet Fernandes' in-swinging corner and Hornicek does well to keep it out.
48: PENALTY APPEAL! Marmoush beats Thiaw to the ball in the area and is caught by the centre-back but referee Peter Bankes waves away loud appeals and VAR stands by the on-field call.
62: GOAL! Gonzalez's long diagonal pass forward is headed down by Dedic for Elanga in the area and the winger hits a shot on the turn that goes in off the left post.
72: IT'S TWO! Wissa hooks the ball over his head into the net at a corner to double Newcastle's lead.
Full-time: SPURS BOOED OFF! Plenty of home fans have already left, but some of the ones that have stayed deliver their verdict at the whistle.
Spurs boss Roberto De Zerbi speaking to Your Site:
"For 60-65 minutes we played better than Newcastle. We had a chance to score but we didn't. After they scored, we lost distances.
"We had more chances and shot more on goal. We are not a team yet. We have to improve a few things.
"Forget the result, but I'm not angry. We are working well. We were unlucky today, especially with the result."
Jamie Redknapp on Saturday Night Football:
"There's a lot of new players at Spurs and it's going to take time. The manager has got a jigsaw puzzle and he's got to figure out how to fit the players in, what system to use, who the best three players are in midfield.
"There are going to be teething problems.
"I also look at the senior players and players like Van de Ven didn't do enough to lead today and certainly with the goals.
"Players who have been there for a long time can do better."
Newcastle boss Matthias Jaissle speaking to Your Site:
"It was incredible and I'm really proud. We are really proud as a club, as a coaching staff to see a team on the pitch delivering the match plan at a high level already, but also seeing players fully committed to what we're doing.
"This is a good start and a moment to enjoy."
Your Site' David Richardson at the Tottenham Hotspur Stadium:
"In Elanga and Wissa, it's like two new players!" said Your Site' Jamie Carragher. The pair are showing their quality at last.
"Newcastle head coach Matthias Jaissle is doing what Eddie Howe couldn't with the duo that were signed for £110m last summer. He also handed midfielder Nico Gonzalez a debut and it was his pass that led to Elanga's opener.
"For all the talk of a season of struggle under their new boss after another difficult transfer window, their supporters left the Tottenham Hotspur Stadium singing about Europe.
"Their chants may have been tongue in cheek, but they will be buoyed by Jaissle's fresh approach, with a side playing with the freedom and togetherness to challenge for European places."`
