French teenager Anthony Martial, having scored as a substitute on his Premier League debut in Manchester United's last game, added two more goals to earn his team a 3-2 win at Southampton on Sunday.
The victory took Louis van Gaal's side into second place, two points behind neighbours Manchester City.
Graziano Pelle put Southampton ahead in the 13th minute but Martial, who cost 36.3 million pounds ($56.39 million) from AS Monaco on the last day of the transfer window, equalised 10 minutes before halftime.
His second goal followed a dreadful backpass by Southampton's Japanese defender Maya Yoshida.
Juan Mata added United's third midway through the second half before Pelle gave his team late hope by heading in Sadio Mane's cross.
Liverpool held at home by Norwich
Danny Ings scored his first Liverpool goal within three minutes of coming on as a substitute but promoted Norwich City fought back to draw 1-1 in the Premier League at Anfield on Sunday.
The home side had started the game in the bottom six following Tottenham Hotspur's win earlier on Sunday and the point lifted them two places to 13th, two places behind Norwich and level on eight points with their opponents.
Liverpool, with their England striker Daniel Sturridge back for the first time since April, brought on Ings for Christian Benteke at halftime and the former Burnley man scored a fine goal almost immediately.
But Norwich central defender Russell Martin equalised with his third goal of the season after a mistake by Liverpool goalkeeper Simon Mignolet.
Son shines at White Hart Lane to give Spurs victory
Son Heung-min scored the only goal on his home Premier League debut as Tottenham Hotspur beat Crystal Palace 1-0 on Sunday and moved into the top half of the table after a well-deserved victory in an end-to-end London derby.
Son, who scored twice when Spurs beat FK Qarabag 3-1 in the Europa League on Thursday, scored again after Spurs broke up a Palace attack in the 68th minute.
Erik Lamela released substitute Christian Eriksen, and the Dane, who had only been on for three minutes after a month out injured, played the ball into space for the South Korean international who honed in on goal before powering a shot that went through goalkeeper Alex McCarthy's legs and into the net.
Spurs dominated possession for most of an entertaining first half without breaking down the Palace defence or seriously troubling McCarthy.
But Palace, despite being continually penned back twice came close to scoring before the break.
Hugo Lloris's acrobatic dive kept out a thunderous Bakary Sako free kick after 38 minutes and Yohan Cabaye smashed an angled shot against the far post just before halftime.
The result lifted Spurs up to ninth with nine points from six matches, with Palace eighth on the same total.
