An arm extended, and one hand on the title. Arsenal are now two victories from ending a 22-year wait , which was about what referee Chris Kavanagh ’s survey of Pablo’s foul on David Raya felt like. A crucial 1-0 was only stopped from becoming a costly 1-1, in the 94th minute, by one man’s interpretation of “wrestling” – as Nuno Espirito Santo put it – at a set-piece. Even Mikel Arteta , who knows a thing or two about the subject from this season alone, was marvelling at the “huge” pressure on Kavanagh. A VAR decision denied West Ham a point with David Raya deemed to have been fouled (Getty) “Probably today I have realised how difficult and how big is the referee's job,” the Arsenal manager said. “Because you're talking about a moment that can decide the history, the course, of two massive clubs that they are fighting with their lives to achieve their objectives.” Indeed, very few moments in modern football history will rival that one for tension, even if it said a lot about where modern football is.…