Duncan Watmore scored twice for the Teessiders before Yan Dhanda pulled one back for the visitors in the second half.
Our Boro writer Joe Nicholson has dished out his marks from the match – scroll down and flick through the pages of our picture gallery to see them:
1. Marcus Bettinelli - 7
Made a couple of important saves in the first half. Got away with one after he was caught up in a defensive mix-up straight after half-time. 7 Photo: Alex Pantling
2. Paddy McNair - 8
Assured at the back and caused problems with his set-pieces. Stepped out of defence to assist Watmore’s second. 8 Photo: Alex Pantling
3. Dael Fry - 8
Made a crucial block to keep the score at 1-0 shortly after half-time. Led by example at the back. 8 Photo: PA
4. Marc Bola - 8
Switched from a left-sided centre-back role to left-back in the second half and defended excellently throughout. 8 Photo: Clive Brunskill