Doak played the full game for Boro as they defeated Hull City 3-1 in the Championship, creating goals for Tommy Conway either side of half-time at Riverside Stadium.
“It’s clear for everyone to see the talent that he’s got and the threat that he has,” Boro head coach Michael Carrick told BBC Sport post-match.
“He’s a different threat to most. He’s quite direct and not so much loads of tricks and skills, but he’s got that attribute to be low with his centre of gravity, he’s direct and gets in that position an awful lot.
“Credit to the boys for supplying him and using him and trying to bring out the best of him. He certainly fits the system really well and it’s up to us to keep pushing him and developing him and trying to make him better.”
Elsewhere in the division, Owen Beck was involved throughout Blackburn Rovers’ 1-0 home win over Leeds United, while Lewis Koumas was a second-half substitute in Stoke City’s 2-0 loss versus Burnley.