His pace and strength caused Burnley's defenders all sorts of problems. First time after he'd just come on a Burnley player ambled across to collect a ball thinking he had good time and not knowing how quick Armstrong is. Armstrong came from behind, ran past him, took the ball, the defender hacked him down from behind and we got a FK in a dangerous position and the defender a yellow. Armstrong got a yellow later himself. He also used his pace to tackle and win a ball back. I've never seen him play a full 90, doubt he'd last that long but he's great coming off the bench late on like yesterday.