Gordon Strachan made seven changes from the team, that were beaten against Ipswich on Saturday and for 60 odd minutes it was one way traffic.
Scott McDonald grabbed his second goal in two games after 8 minutes, with a nice side foot finish, Juilo Arca added a second in 33 minutes after a clanger from the goalkeeper, who could have thrown his cap on it.
Steel, Walker, Bennett, Williams and Grounds all gave a good account of themselves.
Chesterfield manager John Sheridan changed things into the second half and Boro were under pressure.
In 68 minutes Dwayne Mattis scored with a tremendous header, which threw the home team a life line, but Middlesbrough held on and marched through to the next round.
Overall I thought it was a good performance, the passing was neat and tidy and we created several chances.
Strachans 4-3-3 formation worked well on the night, up until Chesterfield changed their tactics and flooded the midfield.
It was interesting, Brad Jones who travelled, didn’t make the team sheet. Is that an indication he is on his way to pastures new?
On the subject of goalkeepers, we had ex Boro goalkeeper Mark Crossley on the Real Radio Legends before the game and I asked his opinion on the big Aussie goalie, he rated him very highly and said he would refuse the bid from Liverpool and hang onto him.
How important was it to progress to the next round and who was your man of the match?