With 84 and a half minutes on the clock, Mikel Arteta presumably suspected Viktor Gyökeres, one of his substitutes, had taken an absorbing FA Cup tie to extra time. Gyökeres cancelled out Ross Stewart’s first-half strike, seizing on his first whiff of goal, but it was Shea Charles, a second-half arrival for Southampton , who earned the Championship hosts victory and passage to the semi-finals. Another sub, Cyle Larin, started the move, protecting the ball with his back to goal. Charles, who was