Arsenal survived a late onslaught from West Bromwich Albion to secure a 2-1 at the Hawthorns.
Tomas Rosicky struck twice for the Gunners, who were marching towards victory until Per Mertesacker’s red card gave the hosts some hope. James Morrison converted the resulting penalty, but the Baggies couldn’t find an equaliser.
Rosicky had cleared a Claudio Yakob header off the line in the early exchanges before opening the scoring on 20 minutes, with the Czech Republic international heading home from close range after some good work from Gervinho.
Steve Clark’s side had a penalty shout turned down 14 minutes later, before both sides missed good chances in the closing stages of the period. Morrison fired a volley off-target, before Aaron Ramsey prodded wide from close range.
Rosicky doubled the advantage five minutes into the second-half, reacting quickest to a rebound from his own shot and firing past Ben Foster.
The Baggies hoped to get back in it just after the hour when another penalty shout was turned down by Howard Webb, but less than 10 minutes later the hosts did get their chance from the spot after Mertesacker’s challenge on Shane Long.
The German saw red, and Morrison fired past Lukasz Fabianski to give West Brom a chance. However, Arsene Wenger introduced Thomas Vermaelen, and the visitors held on for three precious points as Romelu Lukaku wasted the best chance.
Arsenal moved into the top four with victory, ahead of Chelsea and just one-point behind Tottenham Hotspur before both teams play on Sunday.