Didn't they lose their first two games last year? When Stevens started Lee and Zeller up front, and put the team in the hole early--twice--before he finally put them on the bench. This year, Amir hasn't shown up yet, Horford isn't an inside guy, and Zeller is getting big minutes because Olynyk is sidelined. I doubt Olynyk would improve matters, but it just shows they have defensive weaknesses up front--again.
Sullinger, by the way, was the best rebounder of the bunch last year, and his inside play helped a lot. They will miss him this year, though Danny dodged a bullet by letting him go. He has serious foot problems--which is perhaps why he struck out in the playoffs last year.