We've only conceded four goals in our five games since that shock 3-0 home defeat by Middlesbrough and fielded the same back four for the third-successive game in Sunday's goalless draw against Chelsea - we'd previously only managed to field the same back four once this season.
Dean Richards has led from the back with a series of powerful displays backed-up by central partner Chris Perry, the return of Steve Carr and Goran Bunjevcevic doing a great job as emergency left-back. "We're starting to call him Maldini!" laughed Kasey, who insists the longer the same back four can stay together, the better.
He added: "Dean Richards has been fantastic and been the steady rock if you like when we've had injuries and had to mix it around him
"He started off against Chelsea right at the beginning, made that first tackle, the diving header away in the first few minutes and that gets the ball rolling for him.
"If we can keep Dean fit, Steve Carr fit, Steffen Freund in there as well, Chris Perry, who had a fantastic game, it's nice playing with the same team, at least the same back four and we can start to get a good feel for it.
"One cross I came out for I didn't feel like I had to say anything, they knew I was coming, I got it and I feel so comfortable about that.
"If you can play together consistently, you have a real chance."
Kasey Keller believes familiarity is starting to breed a consistent, solid defensive unit at the club.