France forward Loic Remy scored his seventh goal in his last seven Premier League games to earn resurgent Newcastle a 1-0 win at Tottenham and a second straight victory over a top-four contender.
But the visitors needed a string of stunning saves by goalkeeper Tim Krul, especially a one-handed stop from Gylfi Sigurdsson's deflected free kick, in the second half to secure the win at White Hart Lane.
Six days after clinching Newcastle's surprise 2-0 win over Chelsea, Remy ran onto Yoan Gouffran's through-ball, rounded goalkeeper Brad Friedel and slotted home for the 13th-minute winner.
Friedel started for Spurs after Hugo Lloris was not included in the squad to give the France international more rest after being knocked unconscious against Everton last weekend.
The victory lifted Newcastle into the top half but raised further questions about Tottenham's ability to challenge for the Champions League positions. The hosts will rarely play against a goalkeeper in such inspired form as Krul, though.
The Netherlands international brilliantly denied Paulinho at the end of the first half and Christian Eriksen at the start of second, before keeping out Sigurdsson's free kick — and then Younes Kaboul's follow-up — even though he was wrong-footed by a deflection.
Tottenham has scored the fewest goals out of any team in the top half of the standings, with just nine in 11 games.
Phil Bardsley scored in the 21st minute and strugglingSunderland neutralized Manchester City's high-powered attack to hang on for a surprising 1-0 victory in the Premier League on Sunday.
It was only Sunderland's second victory of the season and signaled a possible revival under new manager Gus Poyet, who took over after Paolo Di Canio was sacked with the team in last place. It is still second from bottom with seven points from 11 games.
It was another setback for City, which lost for the fourth time this season and is languishing outside the top four.
Manchester United roared back into the Premier League title race on Sunday by beating leader Arsenal 1-0, completing a perfect day for the reigning champions after earlier defeats for top-four contenders Manchester City and Tottenham.
Robin van Persie headed home United's winner in the 27th minute against his former club, lifting his team to fifth and within five points of Arsenal after 11 games of an unpredictable campaign. Arsenal's lead to second-place Liverpool was cut to two points.
City's poor away form continued with a 1-0 loss at Sunderland, with Phil Bardsley grabbing the winner in the 21st minute, and Tottenham was sunk by Newcastle by the same scoreline after Loic Remy's early strike.
Stoke scored a penalty deep into injury time to draw 3-3 at Swansea.