Tyler Zeller was a starter for the Boston Celtics last season but he has only played sparingly so far in 15-16.

The Celtics added several frontcourt pieces this past offseason in the likes of Amir Johnson and David Lee, while Jared Sullinger has been Boston's best big this season so far.

"Tyler's a really good player," Stevens said. "We just have a lot of bigs. I don't know how else to say it. We haven't shot it great so you want to play some guys that can stretch the floor and be guarded when the floor is stretched. And that leaves at least one person out."

Zeller will be a restricted free agent in the offseason.

"And I don't know that it will always be Tyler," Stevens said. "In fact, I see him playing a huge role for our team and he knows that. But nonetheless it's really hard to deal with. But we've won three of the last four games and he hasn't played as much. But he'll help us win three of four in some other stretch, and he'll play a lot."