With two days between games, the Celtics took advantage of a rare opportunity to practice Saturday morning. And that gave Patriots first-year coach Mike Vrabel his first chance to see the team up close since assuming his new post.

Mazzulla revealed that Vrabel didn't speak at the practice. He acknowledged that he invited Vrabel. "Just getting to know him now, but obviously have seen what he's been able to d

Boston Celtics coach Joe Mazzulla has shown up at New England Patriots practices in the past. So he extended an open invitation to newly-hired Patriots head coach Mike Vrabel to do the same at the Celtics’ practice on Saturday. Vrabel reportedly accepted and showed up at the practice.

Vrabel, 49, was hired by the Patriots shortly after the end of the season. He takes over for Jerod Mayo, who led New England for one year. Celtics coach Joe Mazzulla, who’s in his third season as the top guy, spoke about what it was like having Vrabel around after inviting him to practice.

Joe Mazzulla said that Mike Vrabel brings a "championship perspective" as he welcomed the Patriots coach to Celtics practice.

After the practice, Joe Mazzulla spoke to the media about what it meant to have Vrabel at practice. “The four people that have these jobs for however long they have it, there’