Along with Chris Perry, the pair had a busier first period than Colin would have wished - a fact the Scot puts down to a failure to retain a decent amount of possession.
"I think we defended our goal pretty well, although we didn't defend our half very well," he reflected afterwards. "We gave up possession which led to us being second best for the majority of the first half.
"We were poor in possession of the ball in the first half and it was a good education for the boys in the midfield and forward positions who are all fairly young against players of league experience.
""They are going to learn it and they are going to learn it quick. When you have the senior boys getting exasperated at the back because we can't keep hold of the ball it is a very good indication that jobs are not being done in a good enough manner.
In the second half we were better in possession and it led to it being a more even game but, overall, the best thing I can say is that it has been a good learning experience."
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Colin Calderwood feels that the returning Dean Richards and Ledley King were made to work a little too hard in the first half against Portsmouth in the goalless draw on Tuesday.