Rondo is not having a good year all-around. At least for his standards. I don't know what is wrong with him, but there is something definitely wrong with him.
His defensive rating is 103. Which is still GOOD, and above average, but well below is 99 mark last year. He also doesn't get as many steals as he did 2 years ago.
His shooting percentages are up from last year, but still down compared to 2009 and 2010.
His usage rate this year is a career high. His assist percentage and assists per 48 are down from last season.
His turnovers are a career high. His free throws attempts are a career low.
I don't know what is going on with Rondo, and he is still playing like a GOOD basketball player. Yet, somehow, he has regressed from his productivity in the past couple of years, when he SHOULD be getting better.