Stayed alert to make vital double save off Williamson and Cisse in the first half.
Played at centre-back for the first time in his career but was hardly challenged by the Newcastle attack.
Booked for a late tackle on Dummett but an impressive performance from the youngster. Impressive going forward with his speed and acceleration - and provided a good cross for Giroud's second goal.
Kept a close eye on Newcastle's attacking movement and hit the crossbar a the other end with a powerful header.
Solid defensive display from the left-back and comfortable in possession.
Did fine in a deeper role than usual. Looked best when driving forwards in possession.
The Frenchman did a good job of screening the back four and was neat and tidy on the ball.
Scored Arsenal's second with a great run and even better dinked finish over Alnwick before adding the fourth with a beautiful Panenka penalty. Always dangerous when in possession in pockets of space.
The Chilean was again Arsenal's most dangerous player with his brilliant movement and skill on the ball. Superb assists for Giroud and Cazorla.
Hardly involved for much of the game but made a decisive contribution with two wonderful finishes. The Frenchman pened the scoring with a bullet header and scored the third with a cheeky flick with the outside of his boot.
Played mainly off the left but given freedom to roam. Linked up well in the final third and unlucky to see cheeky first-half chip ruled out for a foul.
Newcastle's third-choice goalkeeper was solid enough when called upon and could do nothing to stop the Arsenal goals.
Moments off good anticipation but some poor decision-making, especially when under pressure in the second half.
Perhaps fortunate to be awarded a free kick after Welbeck outmuscled him and scored but otherwise fine and took up good defensive starting positions.
Powerful in the air but looked clumsy and suspect up against Arsenal's movement in the final third.
Found it difficult to read Alexis's sharp movement and didn't get close enough to prevent the Chilean from providing crosses. Conceded the late penalty with a clumsy challenge on Welbeck.
Worked hard and did fine on the ball, delivering some dangerous set-pieces - including the cross for Perez's goal.
Worked hard without providing any dangerous moments in the Arsenal penalty area.
Powerfully broke up Arsenal attacks but overrun in the second half and took too many touches on the ball, slowing down attacks.
On the periphery of the game but showed lively movement and scored with a lovely diver header.
Looked big and powerful but barely involved before being replaced by Cabella in the 56th minute.
Newcastle's man of the moment was totally anonymous before being replaced by Riviere. Had one shot saved by Szczesny in the first period but did nothing else.