Arsenal challenge will be tougher than facing United, says Wigan boss Martinez By Sportsmail Reporter PUBLISHED: 14:43 GMT, 14 April 2012 | UPDATED: 14:43 GMT, 14 April 2012

Wigan boss Roberto Martinez believes his side face a tougher assignment at Arsenal on Mondaynight than when they hosted andbeat Manchester United. The Latics caused a significant upset on Wednesday with their 1-0 victory against Barclays Premier League leaders United, who went into the contest off theback of an eight-match top-flight winning streak and had triumphed in all 14 of the previous meetings between the two clubs. Martinez spoke of his team achieving 'mission impossible' when looking back on that game.