O'Bryant Impresses In Day 2

Patrick O'Bryant was all the rave today in practice. From Celtics.com: (http://www.nba.com/celtics/news/blog/postups-notebook-2008-09.html)"We had a great practice today. The end was sloppy, I didn't like that part of it, but the first two hours, [we had] great focus. The execution was tremendous," Rivers said. "For a second day practice, it's one of the better ones I've been around." Rivers said he was impressed with Patrick O'Bryant's effort today, and for the second straight day while Kendrick Perkins is unavailable for contact, O'Bryant got the nod with the first unit."Patrick had a hell of a practice. He was great today," Rivers said, noting that if he figures out how to play alongside Kevin Garnett, "things could be pretty good for him."