LONDON, ENGLAND - AUGUST 14: Sadio Mane of Liverpool and team mates celebrate his goal with Jurgen Klopp, Manager of Liverpool during the Premier League match between Arsenal and Liverpool at Emirates Stadium on August 14, 2016 in London, England. (Photo by Mike Hewitt/Getty Images)

Jose Mourinho made a winning Premier League start as Manchester United boss with a comprehensive opening victory at Bournemouth.

Midfielder Juan Mata, who was substituted after coming on in last week's Community Shield win, opened the scoring with a tap-in after Simon Francis' error.

Wayne Rooney headed the second before new signing Zlatan Ibrahimovic marked his United league debut with a goal from 25 yards. Adam Smith scored a consolation goal for the Cherries.

United were without world-record $150m signing Paul Pogba through suspension, while midfielder Henrikh Mkhitaryan started on the bench, with Mata preferred.

Liverpool held on to beat Arsenal in a stunning Premier League opening weekend encounter at Emirates Stadium finishing 4-3 in favour of Jurgen Klopp's men.

Theo Walcott fired in the first goal for the Gunners in the 31st minute, moments after missing a penalty, after being fouled in the box by under fire Spanish left-back Alberto Moreno. The penalty was subsequently saved by Belgium International Simon Mignolet.

Philippe Coutinho equalised with a brilliant free-kick before Adam Lallana fired in after the break, courtesy of a brilliant assist by new signing Georginio Wijnaldum.

Coutinho poked in his second following a Barcelona-esque 19 pass move before Sadio Mane slammed a brilliant solo goal on his Premier League debut for the club.
LONDON, ENGLAND - AUGUST 14:  Sadio Mane of Liverpool and team mates celebrate his goal with Jurgen Klopp, Manager of Liverpool during the Premier League match between Arsenal and Liverpool at Emirates Stadium on August 14, 2016 in London, England.  (Photo by Mike Hewitt/Getty Images)
LONDON, ENGLAND - AUGUST 14: Sadio Mane of Liverpool and team mates celebrate his goal with Jurgen Klopp, Manager of Liverpool during the Premier League match between Arsenal and Liverpool at Emirates Stadium on August 14, 2016 in London, England. (Photo by Mike Hewitt/Getty Images)
The gunners replied through substitute Alex Oxlade-Chamberlain and Calum Chambers but it wasn't enough to rescue a point, Liverpool winning just their second game at the Emirates in ten attempts.
Full Results
Southampton (Smith 69') 1 Manchester United 3 (Mata 40', Rooney 59' & Ibrahimovic 64')
Arsenal (Walcott 31', Chamberlain 64' & Chambers 75') 3 Liverpool 4 (Coutinho 46' & 56', Lallana 49' & Mane 63')
Tomorrow Morning
Chelsea vs West Ham United - 5:00am AEST