Alexis Sánchez hits hat-trick as Arsenal put five past West Ham

Being generous, there is an argument that Arsenal’s late glut of goals in the final 20 minutes exaggerated the extent of their dominance. Yet a more accurate summary is that Arsenal were superior from start to finish, played with the cold-blooded intent of potential champions and exposed West Ham United’s defensive shortcomings so clinically that some awkward questions will be asked about Slaven Bilic’s future.While West Ham contemplated the likelihood of a long, dispiriting fi