According to Gregory, Reading caused the Rams some problems in the first half but his team did well to weather the storm.
Derby boss John Gregory told dcfc.co.uk: "They caused us a few problems in the first half but we kept at it. I don’t mind coming in at 0-0 at half-time because you will find from us this season that we will be a second half team who can kick on. The lads dug in and showed a lot of energy and high fitness levels.
"By then it could have been four, five or even six goals and I thought we were going to score every time we attacked. But I am also delighted that we kept a clean sheet. We kept our organisation and that was very good.
"You will always find that teams are going to put up resistance, particularly at the start of the season when everyone starts off with the same intention of doing well and teams are not going to come here, roll over and let us tickle their tummies."
Meanwhile, Reading's clash against Rotherham at Millmoor, scheduled for kick off at 3pm on Saturday 7th September, has been moved back to 1pm. This is in order to avoid England's international match against Portugal at 4pm that afternoon.