The thing is, I don't know how many good to great on ball defensive point guards there are in the NBA right now. I think if you watched other point guards consistently, you would see the same brand of defense Rondo plays. The problem is, Rajon is matched up with the opposing point guard for the whole game. His opponent should be able to get anywhere he wants on the court with the dribble. This is the hardest player on the floor to keep in front of you for the whole game.
With Rondo, he creates havoc when he is gambling for steals, whether it be reaching in with his good hands, or cheating into passig lanes. This part of his defense is elite.
His on-ball defense is a myth. I hear that every now and then in the media that he is the best on-ball defender in the NBA. That can't be true and it isn't.
There are two reasons why this doesn't bother me as much as it bothers others:
1. When we are going well, we have a good enough help defending team to offset a couple of blow-bys a game.
and
2. Rondo HAS the ability to be an elite on-ball defender. He has lateral quickness. I think that throughout his career, he has always been undersized and felt that he had to be a disruptor and steals threat more than a stopper. Well now he has grown into his body and gotten stronger. It is time to balance his defensive playmaking skills with his untapped stopping ability.
It has gotten marginally better this year. I mean, how many crucial points in a game can you remember Rondo getting blown by? I cant remember any but definitely correct me if I am wrong. I think when the situation calls for it, his on-ball defense is good this year. Hopefully we can watch him grow into a great all around defender.
Keep in mind, the few elite on ball defensive point guards were alot bigger than Rondo (Jason Kidd, DJ, etc..). It takes alot more than just speed to be a great defender. Rondo just got bigger this year so I think he realizes what it takes. I am comfortable with his growth so far and excited for the future.