After falling behind to an Isaac Mbenza free-kick inside nine minutes, an excellent strike from Duncan Watmore and an Ashley Fletcher penalty saw Boro take the lead before half-time.
Paddy McNair was then shown a late red card after a tackle on Huddersfield’s Juninho Bacuna.
Our Boro writer Joe Nicholson has dished out his player ratings from the match:
1. Marcus Bettinelli - 7
Made a few important saves in the closing stages as Boro came under pressure. 7 Photo: Alex Burstow
2. Darnell Fisher - 7
Gave Boro an outlet from right wing-back and won the penalty for his side’s second goal. 7 Photo: Getty Images
3. Anfernee Dijksteel - 7
Assured for most of the match on the right of a back three. 7 Photo: George Wood
4. Grant Hall - 8
Commanding in the air and positioned himself well to sweep up danger. Impressive on his first start since September. 8 Photo: Getty Images