Nobody really stood out as worse than all the rest. They all underperformed, they did it as a unit. They didn't execute offensively, defense wasn't as good as previous games. They're primarily team things. Individually most if not all were below par.
To pick one:
Rondo
He was doing it again tonight, it being getting team very slowly into it's halfcourt offense. Why is he dribbling the ball so long before making the first pass? His lack of shooting hurt the team also. Delonte on the other end looked too comfortable, better D please Rajon.