WALTHAM — Celtics  coach Doc Rivers  put his team through a spirited workout on Friday afternoon at the team’s practice facility, four days before the team opens the season on Tuesday in Cleveland against LeBron James  and the Cavaliers .
Rivers said following the practice that he senses his team is geared up and ready.
“I like where we’re at,” Rivers said. “I’m very happy where we’re at. We’re going to add things all year. We’re ready to play. Even if I didn’t add anything else all year, I think we’re ready to play an NBA game.”