Since the trading away of both Perkins and Erden, the Celtics have been doubted by many. The Celtics are 4-1 since the trade (The one loss being to Denver where the C's only had 9 players (one being a rookie and the other being a d-league center). One thing Boston has been scrutinized with the most is lack of size. Lets take a look at the "size" of the Celtics.*
Troy Murphy - 6'11. One of several Celtics seven footers. No playoff experience.
Jermaine O'Neal - 6'11. Veteran with some playoff experience.
KG - 6'11. Another veteran with fierce tenacity and a ring.
Shaq - 7'11. Nuff said.
Glen Davis - 6'9. Eh. Playoff experience is fair.
Although it's true the Celtics are smaller than before, Jeff Green and Kristic add more offensive with occasional defensive sparks. Don't count the C's out because of size.
*All info from NBA.com