There was some hope that Al Horford would be making progress through the concussion protocol but it sounds like that is not the case.
“He has not advanced in the protocol, based on what I’ve been told,” Stevens said. “I have not gotten anything deeper than that but he did not do anything with our team today.”
Here’s the protocol via Jay King
The NBA's concussion protocol states that a player must first show no symptoms at rest, then complete a series of athletic tasks -- including riding a stationary bike, jogging, agility work and non-contact team drills -- while showing no symptoms at every stage. After passing all that, a player needs to receive clearance to return from a team physician who has discussed the decision with the director of the NBA concussion program, Dr. Jeffrey Kutcher.
It sounds like they tried to put him through some tests on Saturday without much success.
On Saturday, Horford could be seen running on a treadmill above the Celtics' practice court with team trainer Ed Lacerte monitoring the session. Horford then engaged in some light on-court work but quickly departed.
There’s no timetable on the concussion protocol so we’ll just have to see when he passes the tests and feels good enough to play.
Concussions are no joke and the sports medicine community has done a great job of making sure that they are treated with the utmost care and caution. As much as we miss having our All Star center on the court, the first priority is always his health, especially in regards to something that could have long lasting effects.
The news is more positive on Kelly Olynyk though. While everyone is stressing that he won’t rush back, it sounds like he’s close to returning.
Stevens says he doesn't want to predict an exact return date for Kelly Olynyk (shoulder), but believes he is "right around the corner."— Boston Celtics (@celtics) November 7, 2016