The Magpies played the last quarter of the game a man light following substitute Isaac Hayden's dismissal, but – with virtually the last kick – Kenedy missed the opportunity to turn one point into three by firing straight at 'keeper Neil Etheridge from the penalty spot.
Dummett told nufc.co.uk: “A point away from home in a difficult game, with ten men, is a point gained, but it's disappointing because we could have had all three in the 95th minute.
“These things happen in football – players miss penalties, players miss chances, and today it was us.
“Anyone watching would have seen how physical the game was. They got promoted that way, and they'll do the same in the Premier League this season. That'll be their way of trying to stay up – making it difficult for teams to come here and making it a physical battle, especially for teams who want to come here and play football. It's worked for them today and it worked for them last season, and it's going to be tough for anyone.
“It was one of those where we could have had a goal, and they could have had a goal. In the end, the biggest chance of them all is the penalty, and we didn't score it. But, I thought we defended well during the game, and we've kept a clean sheet."