The Boston Celtics are coming off a roller-coaster year that started right from the first quarter of their very first game. Arguably the team's most important player, Al Horford himself wasn't really sure how last season would go.

Steve Bulpett of Boston Herald sat down with Horford as the Celtics' main big man talked about their unexpected deep playoff run last year, including the uncertainty regarding team chemistry at the start of the season.

“I think going into last year there was a lot of uncertainty with our group,” the 32-year-old told the Herald, standing between the two courts in the Celts’ new facility and looking none the worse for wear after the double session. “You know, we kind of looked around — Kyrie (Irving), Gordon (Hayward) and I — and there were all these young guys. Like, what’s going to happen here, right? How are we going to be? Is it going to work?”

But Horford's concern with how Hayward will fit in with the team became irrelevant when their prized recruit suffered a horrific injury in the early minutes of their first game against the Cleveland Cavaliers. Irving also went down with a season-ending injury, but Celtics head coach Brad Stevens managed to sew the pieces together as Horford and company put on a gallant postseason performance.

In fact, Horford's statements would be more applicable right now as the team will look to integrate Irving and Hayward to the rotation again. Jayson Tatum and Jaylen Brown have fast-tracked their development, presenting Stevens with a good problem to handle.

Still, the Celtics are primed for eastern conference supremacy as they fight their way to end a ten-year championship drought.