Hello and welcome to Eurosport's live commentary from the Premier League fixture between West Bromwich Albion and Arsenal. This is Nick Royle (@nickaroyle) taking you through all the action from the Hawthorns.

That is Walcott's last contribution of the afternoon - he is replaced by Giroud.

Nyom oujumps Walcott to clear Sanchez's cross to the far post. Nyom then concedes a corner down the right.

Evans heads clear a whipped-in cross from the left by Sanchez.

West Brom are trying to slow the game down now. Wenger has called for Giroud to warm up.

Robson-Kanu had been on the pitch just 75 seconds before scoring, with just his second touch of the ball.

TV pictures show a furious Wenger complaining to fourth official Kevin Friend after the goal. But I think the officials got that right - McClean seemed level when he received the ball from Chadli.

McClean may well have been offside when he ran on to Chadli's pass, but he was not interfering with play in second-phase possession when Robson-Kanu netted.

GOAL: West Brom 2-1 Arsenal. Robson-Kanu prods home after Ospina can only half clear a header into the box by McClean, although Arsenal are furious as they think the Irishman is in an offside position when the ball rolls into the net.

Arsenal have had 79% possession in the second half.

Nyom clears the Xhaka corner under pressure from Walcott. Rondon, now goalless in 14 matches, is replaced by Hal Robson-Kanu, his 22nd appearance from the bench this season.

Livermore blocks a Bellerin cross on the touchline following a one-two between Bellerin and Sanchez.

Monreal goes under from a shoulder-to-shoulder challenge by Dawson. No penalty, says referee Swarbrick.

CHANCE: WBA clear the short corner, and on the counter attack, Rondon heads Brunt's inch-perfect cross from the right just wide of goal.

Walcott takes the ball down with his chest, and McAuley puts the ball out for a corner under pressure from Ramsey.

Ramsey finds Bellerin, then the ball ends up out on the Arsenal left. Mustafi joins the attack, then Livermore clears Bellerin's cross.

Sanchez fouls Dawson - the Chilean says to ref Swarbrick that the first foul was made by the WBA defender. He gets little sympathy from the match official.

West Brom kick off the second half, and the good news for the away fans is that Sanchez is fit enough to appear for the second 45 minutes.

Referee Swarbrick blows the whistle on an excellent opening 45 minutes at the Hawthorns. It is WBA 1-1 Arsenal.

Evans steps out of defence and finds McClean, but his cross is headed clear by Mustafi.

Nyom clears as Ramsey's ball fails to find Walcott. Xhaka then overhits a wall pass to Sanchez, who does not appreciate being asked to run at pace.