BIRMINGHAM, England :Aston Villa came from behind to defeat West Ham United 2-1 in the FA Cup third round on Friday after a controversial goal from Amadou Onana and a strike from Morgan Rogers denied Graham Potter a victory in his first game as the visitors' manager. A day after Potter was unveiled as Julen Lopetegui's replacement, Lucas Paqueta got West Ham on the scoresheet in the ninth minute when Crysensio Summerville played a square ball across the box that the Brazilian slotted into the