Two goals from Ashley Fletcher as well as strikes from Marcus Tavernier and Marvin Johnson saw the Teessiders reach the next round of the competition.
Our Boro writer Joe Nicholson has dished out his marks following the match – scroll down and flick through our picture gallery to see them:
1. Dejan Stojanovic - 5
Was left exposed for the first two goals. Didn’t have many shots to save overall. 5 Photo: Getty Images
2. Djed Spence - 6
A few flashes in the first half but most of Boro’s attacks came down the opposite flank. Wasn’t able to express himself much going forward after the break. 6 Photo: Alex Livesey
3. Anfernee Dijksteel - 6
Made a few important interceptions in the right centre-back role, a position he played towards the end of last season. 6 Photo: Clive Brunskill
4. Grant Hall - 5
Won a few headers but lost Pyke a couple of times. Happy to receive the ball but there wasn’t always an option for him. 5 Photo: MFC