Pierce is either that out of shape or his foot is still effecting his game. Either way Doc has to see it and sit him.
Here's the problem.
Pietrus is way out of shape as well. Daniels is hurt, big surprise. Green is not a Celtic and Ray is having a hard enough time guarding 2 guards and rebounding like a 2 guard, never mind a SF.
No easy answers when your team is old and hurt and out of shape.