It means he is a joke as D-player of the year last year, and 2nd this year.
So you got the defensive player of the year, at Center, he is mobile, and they wont even put him on Tim Duncan because he would be totally abused.

He always got a cheesy assignment on D so he could come off
his man and block a shot into the stands, ball back to the opponent.
And Denver's defense was so good with him. A good player, but very overrated player imo and another example of worthless stats.