Norwich's run of clean sheets is down to more than just John Ruddy's good form, according to Chris Hughton.
The goalkeeper has done his England chances no harm with a string of decent displays - none better than his performance in Saturday's victory over Manchester United.
That 1-0 win was City's third straight game without conceding - a statistic which seemed a long way off when they were shipping five goals at Fulham on the opening day.
Ruddy will be back at old club Everton this weekend, and Hughton said: "He will enjoy going back and will look for the opportunity to catch up with old friends. It is only a good day, though, if you get something from it.
"I have been very pleased with the team defensively. We will be severely tested on Saturday, but we are buoyed by the good spells we have had this season.
"Clean sheets are always pleasing for a goalkeeper and a back four but it is a real team effort. The back four have a group of players in front of them who are giving them good resistance.
"But Everton have started the season really well. They are playing a very good style of football. They are a good all-round team."