Sunderland manager Tony Mowbray praised Manchester United loanee Amad Diallo after victory over Wigan Athletic.
Mowbray says Amad's performance was his best for the Black Cats since joining the club.
The 20-year-old attacker came off the bench at half-time as he helped Mowbray's men secure an important 2-1 victory over Wigan on Saturday afternoon.
The manager said: "I think that's the best we've seen of him – listen, he's got flashes, he's a wonderful, wonderful footballer.
"On the training ground he's so sharp, quick and clever with the ball – he just has to add the end product for me. Every day I'm in his ear, so he knows, but the work ethic was good today, and the physicality he brought to the job was good and I was pleased for him."