Pierre-Emerick Aubameyang 8 out of 10, Cedric Soares 7; Tim Krul 5 - Arsenal v Norwich player ratings

Bottom club Norwich thumped 4-0 at the Emirates

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  Emiliano Martinez - 7: Pulled off a spectacular save to deny a McLean free kick. Reuters

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  Sead Kolasinac - 7: Offers balance and stability on the left hand side of Arsenal's back three. Understanding with Tierney ahead of him at wing back looks stronger with each game. Reuters

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  Shkodran Mustafi - 6: Sloppy in possession under no pressure. Replaced at half time. Reuters

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  David Luiz - 7: Brazilian was tough in the tackle and assured in possesion. Reuters

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  Hector Bellerin - 6: Spaniard must feel as if his place is under threat with Cedric Soares signing a long-term deal ... and scoring a screamer to boot. AFP

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  Granit Xhaka - 7: Swiss scored his first of the season with a superb finish. EPA

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  Dani Ceballos - 7: Real purpose about the Spaniard since the restart. EPA

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  Kieran Tierney - 7: Provided width down Arsenal's left and saw plenty of the ball. EPA

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  Alexandre Lacazette - 6: Frenchman looked a yard off the pace and should have buried at least one of his first-half chances. Reuters

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  Reiss Nelson - 6: Showed good link-up play with his fellow forwards before coming off early in the second half. Reuters

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  Pierre-Emerick Aubameyang - 8: Both his goals were gifts but his all-round contribution was terrific. Reuters

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  Joe Willock (on for Nelson, 58') - 7: Young midfielder should arguably have done better with his sight at goal. Reuters

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  SUBS: Rob Holding (on for Mustafi, 45') - 7: The young defender looks Arsenal's most accomplished centre-back these days. Reuters

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  Cedric Soares (on for Bellerin, 77') - 7: Portuguese marked his permanent transfer with a debut goal to remember. EPA

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  Eddie Nketiah (on for Lacazette, 76') - 5: Fresh legs to run at a tired Norwich defence. EPA

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  Nicolas Pepe (on for Aubameyang, 82') - 5: Ivorian brought on with Norwich already down and out. Reuters

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  NORWICH CITY RATINGS: Tim Krul - 5: Kept Arsenal at bay with a string of fine saves before his error led to Aubameyang's opener on 33 minutes. Reuters

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  Max Aarons - 5: Played too close to his centre-backs in the first half allowing Tierney to much time and space. EPA

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  Alexander Tettey - 6: Makeshift centre-back will hope Norwich's injured defenders recover quickly. Reuters

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  Ben Godfrey - 5: Almost scored a goal-of-the-season contender before Arsenal ran away with it. EPA

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  Jamal Lewis - 6: Will have been relieved that Arsenal's best attacks came from the opposite flank. Reuters

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  Tom Trybull - 5: Tireless midfielder never stopped running but looked out of his depth before being replaced at the interval. EPA

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  Lukas Rupp - 6: Another who put in a shift without much reward. EPA

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  Emi Buendía (not pictured) - 5: Spaniard neither excelled as an attacking or defensive force. EPA

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  Kenny McLean - 6: Thought he had scored with a wonderful free kick only to see Martinez fling himself across goal to palm out for a corner. EPA

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  Todd Cantwell - 7: An energetic display against the club he supported as a boy. Head and shoulders above his teammates. EPA

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  Teemu Pukki - 5: Ploughed a lone farrow up front but the Finn has now gone 10 games without a goal. EPA

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  SUBS: Onel Hernandez (on for Buendia, 45') - 6: All of Norwich's second-half subs were an improvement with the Cuban-born German doing his chances of more regular football no harm at all. AFP

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  Josip Drmic (on for Tryball, 45') - 5: Looked to make things happen from midfield, but with little joy. EPA

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  Adam Idah (on for Pukki, 45 ') - 5: Offered more muscle than Pukki but never looked like scoring. AFP

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  Marco Stiepermann (on for Cantwell, 75'): No chance to make an impact with damage limitation the order of play. Reuters

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  Mario Vrancic (on for Rupp, 75') - 4: Replaced tired legs. AFP

An error from goalkeeper Tim Krul gifted Pierre-Emerick Aubameyang his 50th Premier League goal as Arsenal thumped Norwich City 4-0 at the Emirates Stadium, pushing the Canaries ever closer to relegation.

Krul foolishly attempted to fake a long kick and dribble past the Gabon striker in the 33rd minute, but he nicked the ball off the keeper's foot and rolled it into the net to reach a half-century of goals in the English top flight.

The Gunners scored a brilliant second four minutes later through Granit Xhaka, and though Norwich started the second half brightly, Aubameyang killed the game off with his second goal in the 67th minute.

Cedric Soares came off the bench to score his first goal for Arsenal in the 81st minute.