Arsenal v Manchester United - player ratings
PETR CECH: Denied Jesse Lingard early in the second half at 2-1, but could do little about the goals. 6 (out of 10)
SHKODRAN MUSTAFI: Terrible error in being caught for United's second and limped off with an ankle injury immediately afterwards. 4.
LAURENT KOSCIELNY: Awful mistake led to United's opening goal which left Arsenal to chase and then beaten by Paul Pogba for United's third. 4.
NACHO MONREAL: Exposed with Arsenal chasing the game on a difficult afternoon. 5.
HECTOR BELLERIN: Covered plenty of ground, but United enjoyed space down the Arsenal right. 5.
AARON RAMSEY: Set up Alexandre Lacazette's goal with a well-timed run and cushioned pass. 6.
GRANIT XHAKA: Shot just wide in the first half, but did not offer the protection Arsenal's fragile defence needed. 5.
SEAD KOLASINAC: Could do little about the opening goal when Koscielny's wayward pass did not reach its target. 5.
ALEXANDRE LACAZETTE: Scored and was denied by David De Gea on more than one occasion as he showed his ability. 8.
MESUT OZIL: Linked with a reunion with Jose Mourinho in the summer, the Germany playmaker had few chances to shine. 6.
ALEXIS SANCHEZ: Denied by De Gea in the second half and provided the pass which led to Lacazette's goal. 6.
ALEX IWOBI (for Mustafi, 15 minutes): Troubled United with his direct running. 6.
DANNY WELBECK (for Xhaka, 70): Had a shot blocked and might have had a penalty. 6.
OLIVIER GIROUD (for Kolasinac, 76): The France striker was unable to have his usual goal-scoring impact off the bench. 5.
DAVID DE GEA: Stunning performance from the Premier League's - and arguably the world's - best. Saved from Lacazette and Sanchez in quick succesion. 9 (out of 10.
VICTOR LINDELOF: Not alone in being caught napping for Lacazette's goal. 6.
CHRIS SMALLING: Kept busy by Lacazette on a challenging night for defenders. 6.
MARCOS ROJO: Performed well up against Ozil and Sanchez. 6
ANTONIO VALENCIA: Took his goal well after combining with Paul Pogba down the right. 7.
NEMANJA MATIC: Imposed himself in midfield to allow Pogba and Lingard to thunder forwards. 7.
JESSE LINGARD: Terrier-like for his first goal and clinical for both of his strikes. 8.
PAUL POGBA: Two assists as he showed his attacking brilliance. But a poor and costly challenge on Bellerin earned red and a suspension for the Manchester derby. 7.
ROMELU LUKAKU: Linked well with Lingard, Pogba and Anthony Martial at times, but threatened goal rarely. 6.
ANTHONY MARTIAL: Delightful pirouette for Lingard's goal. His pace was a potent weapon throughout and he enjoys a fine understanding with Pogba. 8.
ASHLEY YOUNG: Disciplined performance to allow his team-mates to flourish. 6.
ANDER HERRERA (for Martial, 67): Gave United an additional body in midfield to protect the advantage. 5.
MATTEO DARMIAN (for Lingard, 76): Not the calming defensive presence needed in the finale. 5.
MARCUS RASHFORD (for Young, 90): A late change to take up time. 5.