After shooting just 1-of-5 from the field and scoring four points in 18 minutes off the bench during a 100-94 loss to the 76ers, Celtics forward Jeff Green gave a few curt responses during his postgame press conference, eventually offering a “mmm-hmm” to one final question before catching the team’s flight to Milwaukee.

After scoring three points in the season opener, Green tallied 22 points over his next two games before netting just 10 points in 40 minutes over his past two — a drastic drop from his stellar preseason play. On Thursday, Danny Ainge expressed his disappointment in Green’s adjustment, and Friday was coach Doc Rivers‘ turn.

“It’s a dilemma, but he’s going to be a good player for us this year,” said Rivers. “And sooner rather than later, I’m hoping. We’ve just got to unlock him. Right now, he’s just absolutely frustrated; you can see it in his play. But that’s on all of us; it’s not just on Jeff. Jeff’s the easy target right now. Jeff’s part of this team, just like everyone else, and we have to do a better job of getting him going. He’s probably got to do a better job of getting himself going.”