Arsenal's duality was there for all to see in their 2-0 win at Sunderland: gritty defence and moments of genius. After close to an hour of physical, full-blooded football, Sunderland were given a penalty when Ezri Konsa fouled Dan Ballard at a corner. It proved the turning point - David Raya tipped Enzo le Fee's spot kick on to the post, and just over two minutes later, Arsenal substitute Bruno Guimaraes crashed in the opener off the underside of the crossbar.